fix: use MACOS platform to resolve 405 connection failure

WhatsApp servers reject UserAgent.Platform.WEB (value 14) since
Feb 2026, causing 405 on new device pairing. MACOS (value 24)
matches current WhatsApp Web behavior. Ref: Baileys#2365, #2370.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

WAProto/WAProto.proto

@@ -1,7 +1,7 @@
 syntax = "proto3";
 package proto;
 
-/// WhatsApp Version: 2.3000.1034302344
+/// WhatsApp Version: 2.3000.1034238531
 
 message ADVDeviceIdentity {
     optional uint32 rawId = 1;

src/Defaults/baileys-version.json

@@ -1 +1 @@
-{"version":[2,3000,1034382497]}
+{"version":[2,3000,1034258243]}

src/Defaults/index.ts

@@ -56,33 +56,10 @@ export const PROCESSABLE_HISTORY_TYPES = [
 // 6 hours in milliseconds
 const SIX_HOURS_MS = 6 * 60 * 60 * 1000
 
-/**
- * Resolves the default browser tuple from the BAILEYS_BROWSER env var.
- * Default: Android companion (SMB_ANDROID) — matches upstream PR #2201.
- * Pair code auto-detects Android and falls back to Chrome in socket.ts.
- *
- *   unset / 'android'    → Browsers.android('14')
- *   'android:15'         → Browsers.android('15')
- *   'chrome' / 'macos'   → Browsers.macOS('Chrome')
- */
-const resolveDefaultBrowser = (): [string, string, string] => {
-	const env = process.env.BAILEYS_BROWSER?.trim().toLowerCase()
-	if (env === 'chrome' || env === 'macos') {
-		return Browsers.macOS('Chrome')
-	}
-
-	if (env?.startsWith('android:')) {
-		const apiLevel = env.split(':')[1] || '14'
-		return Browsers.android(apiLevel)
-	}
-
-	return Browsers.android('14')
-}
-
 export const DEFAULT_CONNECTION_CONFIG: SocketConfig = {
 	version: version as WAVersion,
 	versionCheckIntervalMs: SIX_HOURS_MS,
-	browser: resolveDefaultBrowser(),
+	browser: Browsers.macOS('Chrome'),
 	waWebSocketUrl: 'wss://web.whatsapp.com/ws/chat',
 	connectTimeoutMs: 20_000,
 	keepAliveIntervalMs: 15_000,
@@ -90,7 +67,7 @@ export const DEFAULT_CONNECTION_CONFIG: SocketConfig = {
 	emitOwnEvents: true,
 	defaultQueryTimeoutMs: 30_000,
 	customUploadHosts: [],
-	retryRequestDelayMs: 150,
+	retryRequestDelayMs: 250,
 	maxMsgRetryCount: 5,
 	fireInitQueries: true,
 	auth: undefined as unknown as AuthenticationState,
@@ -101,7 +78,7 @@ export const DEFAULT_CONNECTION_CONFIG: SocketConfig = {
 	shouldSyncHistoryMessage: () => true,
 	shouldIgnoreJid: () => false,
 	linkPreviewImageThumbnailWidth: 192,
-	transactionOpts: { maxCommitRetries: 10, delayBetweenTriesMs: 1000 },
+	transactionOpts: { maxCommitRetries: 10, delayBetweenTriesMs: 3000 },
 	generateHighQualityLinkPreview: false,
 	enableAutoSessionRecreation: true,
 	enableRecentMessageCache: true,

src/Socket/chats.ts

@@ -50,8 +50,7 @@ import {
 	isMissingKeyError,
 	MAX_SYNC_ATTEMPTS,
 	newLTHashState,
-	processSyncAction,
-	resolveLidToPn
+	processSyncAction
 } from '../Utils'
 import { makeKeyedMutex, makeMutex } from '../Utils/make-mutex'
 import processMessage from '../Utils/process-message'
@@ -103,14 +102,14 @@ export const makeChatsSocket = (config: SocketConfig) => {
 	/** this mutex ensures that messages from the same chat are processed in order, while allowing parallel processing of messages from different chats */
 	const messageMutex = makeKeyedMutex()
 
-	/** this mutex ensures that receipts from the same chat are processed in order, while allowing parallel processing across chats */
-	const receiptMutex = makeKeyedMutex()
+	/** this mutex ensures that receipts are processed in order */
+	const receiptMutex = makeMutex()
 
 	/** this mutex ensures that app state patches are processed in order */
 	const appStatePatchMutex = makeMutex()
 
-	/** this mutex ensures that notifications from the same chat are processed in order, while allowing parallel processing across chats */
-	const notificationMutex = makeKeyedMutex()
+	/** this mutex ensures that notifications are processed in order */
+	const notificationMutex = makeMutex()
 
 	// Timeout for AwaitingInitialSync state
 	let awaitingSyncTimeout: NodeJS.Timeout | undefined
@@ -758,16 +757,9 @@ export const makeChatsSocket = (config: SocketConfig) => {
 			}, authState?.creds?.me?.id || 'resync-app-state')
 
 			const { onMutation } = newAppStateChunkHandler(isInitialSync)
-			const lidMapping = signalRepository.lidMapping
 			for (const key in globalMutationMap) {
 				const mutation = globalMutationMap[key]
 				if (!mutation) continue
-				// Normalize LID→PN in sync action index[1] (chat/contact ID)
-				if (mutation.index[1] && isAnyLidUser(mutation.index[1])) {
-					const resolved = await resolveLidToPn(mutation.index[1], lidMapping, logger)
-					if (resolved) mutation.index[1] = resolved
-				}
-
 				onMutation(mutation)
 			}
 		}
@@ -920,16 +912,16 @@ export const makeChatsSocket = (config: SocketConfig) => {
 		})
 	}
 
-	const handlePresenceUpdate = async ({ tag, attrs, content }: BinaryNode) => {
+	const handlePresenceUpdate = ({ tag, attrs, content }: BinaryNode) => {
 		let presence: PresenceData | undefined
-		const rawJid = attrs.from
-		const rawParticipant = attrs.participant || attrs.from
-		if (!rawJid) {
+		const jid = attrs.from
+		const participant = attrs.participant || attrs.from
+		if (!jid) {
 			logger.warn({ attrs }, 'handlePresenceUpdate: jid (attrs.from) is missing, skipping')
 			return
 		}
 
-		if (shouldIgnoreJid(rawJid) && rawJid !== S_WHATSAPP_NET) {
+		if (shouldIgnoreJid(jid) && jid !== S_WHATSAPP_NET) {
 			return
 		}
 
@@ -941,7 +933,7 @@ export const makeChatsSocket = (config: SocketConfig) => {
 		} else if (Array.isArray(content)) {
 			const [firstChild] = content
 			if (!firstChild) {
-				logger.warn({ jid: rawJid }, 'handlePresenceUpdate: firstChild content is empty, skipping')
+				logger.warn({ jid }, 'handlePresenceUpdate: firstChild content is empty, skipping')
 				return
 			}
 
@@ -960,19 +952,12 @@ export const makeChatsSocket = (config: SocketConfig) => {
 		}
 
 		if (presence) {
-			if (!rawParticipant) {
-				logger.warn({ jid: rawJid }, 'handlePresenceUpdate: participant is missing, skipping')
+			if (!participant) {
+				logger.warn({ jid }, 'handlePresenceUpdate: participant is missing, skipping')
 				return
 			}
 
-			// Resolve LID→PN so consumers always see phone-number JIDs
-			const lidMapping = signalRepository.lidMapping
-			const [jid, participant] = await Promise.all([
-				resolveLidToPn(rawJid, lidMapping, logger),
-				resolveLidToPn(rawParticipant, lidMapping, logger)
-			])
-
-			ev.emit('presence.update', { id: jid!, presences: { [participant!]: presence } })
+			ev.emit('presence.update', { id: jid, presences: { [participant]: presence } })
 		}
 	}
 
@@ -1046,16 +1031,8 @@ export const makeChatsSocket = (config: SocketConfig) => {
 				undefined,
 				logger
 			)
-			const lidMapping = signalRepository.lidMapping
 			for (const key in mutationMap) {
-				const mutation = mutationMap[key]!
-				// Normalize LID→PN in sync action index[1] (chat/contact ID)
-				if (mutation.index[1] && isAnyLidUser(mutation.index[1])) {
-					const resolved = await resolveLidToPn(mutation.index[1], lidMapping, logger)
-					if (resolved) mutation.index[1] = resolved
-				}
-
-				onMutation(mutation)
+				onMutation(mutationMap[key]!)
 			}
 		}
 	}
@@ -1399,12 +1376,8 @@ export const makeChatsSocket = (config: SocketConfig) => {
 		}
 	})
 
-	ws.on('CB:presence', (node: BinaryNode) => {
-		handlePresenceUpdate(node).catch(err => onUnexpectedError(err, 'handling presence update'))
-	})
-	ws.on('CB:chatstate', (node: BinaryNode) => {
-		handlePresenceUpdate(node).catch(err => onUnexpectedError(err, 'handling chatstate update'))
-	})
+	ws.on('CB:presence', handlePresenceUpdate)
+	ws.on('CB:chatstate', handlePresenceUpdate)
 
 	ws.on('CB:ib,,dirty', async (node: BinaryNode) => {
 		const { attrs } = getBinaryNodeChild(node, 'dirty')!
@@ -1522,7 +1495,7 @@ export const makeChatsSocket = (config: SocketConfig) => {
 
 		awaitingSyncTimeout = setTimeout(() => {
 			if (syncState === SyncState.AwaitingInitialSync) {
-				logger.warn('Timeout in AwaitingInitialSync (2s), forcing state to Online and flushing buffer')
+				logger.warn('Timeout in AwaitingInitialSync (4s), forcing state to Online and flushing buffer')
 				syncState = SyncState.Online
 				ev.flush()
 
@@ -1532,7 +1505,7 @@ export const makeChatsSocket = (config: SocketConfig) => {
 				const accountSyncCounter = (authState.creds.accountSyncCounter || 0) + 1
 				ev.emit('creds.update', { accountSyncCounter })
 			}
-		}, 2_000)
+		}, 4_000)
 	})
 
 	// When an app state sync key arrives (myAppStateKeyId is set) and there are

src/Socket/groups.ts

@@ -1,7 +1,7 @@
 import { proto } from '../../WAProto/index.js'
 import type { GroupMetadata, GroupParticipant, ParticipantAction, SocketConfig, WAMessageKey } from '../Types'
 import { WAMessageAddressingMode, WAMessageStubType } from '../Types'
-import { generateMessageIDV2, resolveLidToPn, unixTimestampSeconds } from '../Utils'
+import { generateMessageIDV2, unixTimestampSeconds } from '../Utils'
 import {
 	type BinaryNode,
 	getBinaryNodeChild,
@@ -17,43 +17,6 @@ import { makeChatsSocket } from './chats'
 export const makeGroupsSocket = (config: SocketConfig) => {
 	const sock = makeChatsSocket(config)
 	const { authState, ev, query, upsertMessage } = sock
-	const { signalRepository } = sock
-	const { logger } = config
-
-	/** Normalize group metadata participant IDs from LID to PN */
-	const normalizeGroupMetadata = async (metadata: GroupMetadata): Promise<GroupMetadata> => {
-		const lidMapping = signalRepository.lidMapping
-
-		// Resolve all participant LIDs in parallel for better performance on large groups
-		await Promise.all(metadata.participants.map(async (p) => {
-			if (isLidUser(p.id)) {
-				if (p.phoneNumber) {
-					p.lid = p.id
-					p.id = p.phoneNumber
-				} else {
-					const resolved = await resolveLidToPn(p.id, lidMapping, logger)
-					if (resolved && resolved !== p.id) {
-						p.lid = p.id
-						p.id = resolved
-					}
-				}
-			}
-		}))
-
-		// Normalize owner/subjectOwner if LID (parallel)
-		const [resolvedOwner, resolvedSubjectOwner] = await Promise.all([
-			metadata.owner && isLidUser(metadata.owner)
-				? (metadata.ownerPn || resolveLidToPn(metadata.owner, lidMapping, logger))
-				: null,
-			metadata.subjectOwner && isLidUser(metadata.subjectOwner)
-				? (metadata.subjectOwnerPn || resolveLidToPn(metadata.subjectOwner, lidMapping, logger))
-				: null
-		])
-		if (resolvedOwner) metadata.owner = resolvedOwner
-		if (resolvedSubjectOwner) metadata.subjectOwner = resolvedSubjectOwner
-
-		return metadata
-	}
 
 	const groupQuery = async (jid: string, type: 'get' | 'set', content: BinaryNode[]) =>
 		query({
@@ -68,7 +31,7 @@ export const makeGroupsSocket = (config: SocketConfig) => {
 
 	const groupMetadata = async (jid: string) => {
 		const result = await groupQuery(jid, 'get', [{ tag: 'query', attrs: { request: 'interactive' } }])
-		return normalizeGroupMetadata(extractGroupMetadata(result))
+		return extractGroupMetadata(result)
 	}
 
 	const groupFetchAllParticipating = async () => {
@@ -95,15 +58,16 @@ export const makeGroupsSocket = (config: SocketConfig) => {
 		if (groupsChild) {
 			const groups = getBinaryNodeChildren(groupsChild, 'group')
 			for (const groupNode of groups) {
-				const meta = await normalizeGroupMetadata(extractGroupMetadata({
+				const meta = extractGroupMetadata({
 					tag: 'result',
 					attrs: {},
 					content: [groupNode]
-				}))
+				})
 				data[meta.id] = meta
 			}
 		}
 
+		// TODO: properly parse LID / PN DATA
 		sock.ev.emit('groups.update', Object.values(data))
 
 		return data
@@ -137,7 +101,7 @@ export const makeGroupsSocket = (config: SocketConfig) => {
 					}))
 				}
 			])
-			return normalizeGroupMetadata(extractGroupMetadata(result))
+			return extractGroupMetadata(result)
 		},
 		groupLeave: async (id: string) => {
 			await groupQuery('@g.us', 'set', [
@@ -313,7 +277,7 @@ export const makeGroupsSocket = (config: SocketConfig) => {
 		),
 		groupGetInviteInfo: async (code: string) => {
 			const results = await groupQuery('@g.us', 'get', [{ tag: 'invite', attrs: { code } }])
-			return normalizeGroupMetadata(extractGroupMetadata(results))
+			return extractGroupMetadata(results)
 		},
 		groupToggleEphemeral: async (jid: string, ephemeralExpiration: number) => {
 			const content: BinaryNode = ephemeralExpiration

src/Socket/messages-send.ts

@@ -1611,8 +1611,6 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 
 						// Persist senderTimestamp unconditionally — WA Web stores it in the chat table
 						// regardless of whether a token exists. Spread preserves token+timestamp if present.
-						// WABA Android: INSERT INTO wa_trusted_contacts_send (jid, sent_tc_token_timestamp, real_issue_timestamp)
-						// VALUES (?, ?, 0) — realIssueTimestamp=0 means issued but not yet confirmed by server
 						const currentData = await authState.keys.get('tctoken', [tcTokenJid])
 						const currentEntry = currentData[tcTokenJid]
 						await authState.keys.set({
@@ -1620,8 +1618,7 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 								[tcTokenJid]: {
 									...currentEntry,
 									token: currentEntry?.token ?? Buffer.alloc(0),
-									senderTimestamp: issueTimestamp,
-									realIssueTimestamp: 0
+									senderTimestamp: issueTimestamp
 								}
 							}
 						})

src/Socket/socket.ts

@@ -38,7 +38,7 @@ import {
 	signedKeyPair,
 	xmppSignedPreKey
 } from '../Utils'
-import { getPlatformId, isAndroidBrowser } from '../Utils/browser-utils'
+import { getPlatformId } from '../Utils/browser-utils'
 import {
 	CircuitBreaker,
 	CircuitOpenError,
@@ -634,6 +634,8 @@ export const makeSocket = (config: SocketConfig) => {
 		}
 		helloMsg = proto.HandshakeMessage.fromObject(helloMsg)
 
+		logger.info({ browser, helloMsg }, 'connected to WA')
+
 		const init = proto.HandshakeMessage.encode(helloMsg).finish()
 
 		const result = await awaitNextMessage<Uint8Array>(init)
@@ -1350,25 +1352,6 @@ export const makeSocket = (config: SocketConfig) => {
 			id: jidEncode(phoneNumber, 's.whatsapp.net'),
 			name: '~'
 		}
-
-		// Pair code companion_platform_id must be Chrome (1) when using Android
-		// browser preset. ANDROID_PHONE (16) causes silent timeout (server ignores),
-		// UWP (21) causes "cannot connect device" rejection. Only Chrome (1) works
-		// for pair code via web protocol (WA\x06\x03). The device still appears as
-		// "Android" in linked devices because DeviceProps.platformType=ANDROID_PHONE
-		// is set separately in the registration node.
-		const isAndroid = isAndroidBrowser(browser)
-		const pairPlatformId = isAndroid ? getPlatformId('Chrome') : getPlatformId(browser[1])
-		const pairPlatformDisplay = isAndroid ? 'Chrome (Mac OS)' : `${browser[1]} (${browser[0]})`
-
-		logger.info({
-			pairCode: pairingCode,
-			jid: authState.creds.me.id,
-			companionPlatformId: pairPlatformId,
-			companionPlatformDisplay: pairPlatformDisplay,
-			isAndroid,
-		}, `pair code requested | companion: ${pairPlatformDisplay} | ${isAndroid ? 'android override -> Chrome' : 'native platform'}`)
-
 		ev.emit('creds.update', authState.creds)
 		await sendNode({
 			tag: 'iq',
@@ -1401,12 +1384,12 @@ export const makeSocket = (config: SocketConfig) => {
 						{
 							tag: 'companion_platform_id',
 							attrs: {},
-							content: pairPlatformId
+							content: getPlatformId(browser[1])
 						},
 						{
 							tag: 'companion_platform_display',
 							attrs: {},
-							content: pairPlatformDisplay
+							content: `${browser[1]} (${browser[0]})`
 						},
 						{
 							tag: 'link_code_pairing_nonce',
@@ -1536,9 +1519,7 @@ export const makeSocket = (config: SocketConfig) => {
 	})
 	// login complete
 	ws.on('CB:success', async (node: BinaryNode) => {
-		const isAndroid = isAndroidBrowser(browser)
-		const phoneId = authState.creds.me?.id?.split(':')[0]?.split('@')[0] || 'new session'
-		logger.info(`${isAndroid ? '\uD83D\uDCF1' : '\uD83D\uDDA5\uFE0F'} Connected to WA | ${phoneId} | platform: ${isAndroid ? 'SMB_ANDROID' : 'MACOS'} | device: ${isAndroid ? 'Android' : 'Desktop'} | platformType: ${isAndroid ? 'ANDROID_PHONE' : 'CHROME'}`)
+		logger.info('opened connection to WA')
 		clearTimeout(qrTimer) // will never happen in all likelyhood -- but just in case WA sends success on first try
 
 		ev.emit('creds.update', { me: { ...authState.creds.me!, lid: node.attrs.lid } })
@@ -1686,8 +1667,8 @@ export const makeSocket = (config: SocketConfig) => {
 	// already-authenticated session (no QR re-scan needed). In this case we skip
 	// the offline buffer entirely so live messages are not held hostage waiting for the
 	// server to finish flushing the pending-message backlog (CB:ib,,offline).
-	// For normal restarts (no stale routingInfo) the standard 2 s safety cap applies.
-	const OFFLINE_BUFFER_TIMEOUT_MS = 2_000
+	// For normal restarts (no stale routingInfo) the standard 5 s safety cap applies.
+	const OFFLINE_BUFFER_TIMEOUT_MS = 5_000
 	let offlineBufferTimeout: NodeJS.Timeout | undefined
 
 	process.nextTick(() => {

src/Types/Auth.ts

@@ -80,7 +80,7 @@ export type SignalDataTypeMap = {
 	'app-state-sync-version': LTHashState
 	'lid-mapping': string
 	'device-list': string[]
-	tctoken: { token: Buffer; timestamp?: string; senderTimestamp?: number; realIssueTimestamp?: number | null }
+	tctoken: { token: Buffer; timestamp?: string; senderTimestamp?: number }
 	/** Identity key for Signal Protocol - used for detecting contact reinstalls */
 	'identity-key': Uint8Array
 }

src/Types/Call.ts

@@ -1,30 +1,4 @@
-export type WACallUpdateType =
-	| 'offer'
-	| 'ringing'
-	| 'timeout'
-	| 'reject'
-	| 'accept'
-	| 'terminate'
-	| 'preaccept'
-	| 'transport'
-	| 'relaylatency'
-	| 'group_update'
-	| 'reminder'
-	| 'heartbeat'
-	| 'mute_v2'
-	| 'enc_rekey'
-	| 'video'
-	| 'relay'
-
-export type WACallParticipant = {
-	jid?: string
-	/** 'connected' | 'invited' | 'left' etc. */
-	state?: string
-	/** Phone number in s.whatsapp.net format */
-	userPn?: string
-	/** 'admin' for group call link creator */
-	type?: string
-}
+export type WACallUpdateType = 'offer' | 'ringing' | 'timeout' | 'reject' | 'accept' | 'terminate'
 
 export type WACallEvent = {
 	chatId: string
@@ -39,20 +13,4 @@ export type WACallEvent = {
 	latencyMs?: number
 	/** Phone number of the caller (sanitized to fix Brazilian landline bug) */
 	callerPn?: string
-	/** Call link token (forms URL: https://call.whatsapp.com/video/<token>) */
-	linkToken?: string
-	/** JID of who created the call link */
-	linkCreator?: string
-	/** Phone number of link creator */
-	linkCreatorPn?: string
-	/** Media type: 'video' or 'audio' */
-	media?: string
-	/** Max participants for group/link calls */
-	connectedLimit?: number
-	/** Participants in a group/link call */
-	participants?: WACallParticipant[]
-	/** Call duration in ms (from terminate/call_summary) */
-	duration?: number
-	/** Terminate reason (e.g. 'group_call_ended', 'accepted_elsewhere', 'timeout') */
-	terminateReason?: string
 }

src/Types/Message.ts

@@ -54,14 +54,12 @@ export type WAMediaUpload = Buffer | WAMediaPayloadStream | WAMediaPayloadURL
  * Individual sticker in a sticker pack
  */
 export type Sticker = {
-	/** Buffer, Stream or URL of the sticker image (WebP or Lottie/WAS format) */
+	/** Buffer, Stream or URL of the sticker image (will be converted to WebP if needed) */
 	data: WAMediaUpload
 	/** Array of emojis associated with this sticker (max 3 recommended per WhatsApp standards) */
 	emojis?: string[]
 	/** Accessibility label for screen readers (max 125 chars for static, 255 for animated) */
 	accessibilityLabel?: string
-	/** Force Lottie format detection (auto-detected if omitted) */
-	isLottie?: boolean
 }
 
 /**

src/Types/index.ts

@@ -23,7 +23,6 @@ export type BrowsersMap = {
 	baileys(browser: string): [string, string, string]
 	windows(browser: string): [string, string, string]
 	appropriate(browser: string): [string, string, string]
-	android(apiLevel: string): [string, string, string]
 }
 
 export enum DisconnectReason {

src/Utils/browser-utils.ts

@@ -94,13 +94,7 @@ const BROWSER_TO_PLATFORM_ID: ReadonlyMap<string, string> = (() => {
 		}
 	}
 
-	const map = new Map(entries)
-	// ANDROID → ANDROID_PHONE alias (DeviceProps.PlatformType has ANDROID_PHONE but not ANDROID)
-	if (!map.has('ANDROID') && map.has('ANDROID_PHONE')) {
-		map.set('ANDROID', map.get('ANDROID_PHONE')!)
-	}
-
-	return map
+	return new Map(entries)
 })()
 
 // ============================================================
@@ -337,8 +331,7 @@ export const Browsers: BrowsersMap = {
 	macOS: (browser: string): [string, string, string] => ['Mac OS', browser, OS_VERSIONS.macOS],
 	windows: (browser: string): [string, string, string] => ['Windows', browser, OS_VERSIONS.windows],
 	baileys: (browser: string): [string, string, string] => ['Baileys', browser, OS_VERSIONS.baileys],
-	appropriate: (browser: string): [string, string, string] => [getPlatformName(), browser, getAppropriateVersion()],
-	android: (apiLevel: string): [string, string, string] => [apiLevel, 'Android', '']
+	appropriate: (browser: string): [string, string, string] => [getPlatformName(), browser, getAppropriateVersion()]
 } as const
 
 /**
@@ -385,7 +378,7 @@ export const getPlatformId = (browser: unknown): string => {
  * properties like 'toString' or 'constructor'.
  *
  * @param value - Value to check
- * @returns True if value is a valid browser preset key ('ubuntu', 'macOS', 'windows', 'baileys', 'appropriate', 'android')
+ * @returns True if value is a valid browser preset key ('ubuntu', 'macOS', 'windows', 'baileys', 'appropriate')
  *
  * @example
  * isValidBrowserPreset('ubuntu')      // true
@@ -398,16 +391,6 @@ export const getPlatformId = (browser: unknown): string => {
  *   const config = Browsers[userInput]('MyApp')
  * }
  */
-/**
- * Checks if the browser tuple represents an Android companion device.
- *
- * @param browser - Browser tuple [os, platform, version]
- * @returns True if platform is 'Android' (case-insensitive)
- */
-export const isAndroidBrowser = (browser: [string, string, string]): boolean => {
-	return browser[1]?.toUpperCase() === 'ANDROID'
-}
-
 export const isValidBrowserPreset = (value: unknown): value is keyof BrowsersMap => {
 	return typeof value === 'string' && Object.prototype.hasOwnProperty.call(Browsers, value)
 }

src/Utils/decode-wa-message.ts

@@ -276,6 +276,7 @@ export const decryptMessageNode = (
 	meLid: string,
 	repository: SignalRepositoryWithLIDStore,
 	logger: ILogger,
+	autoCleanCorrupted = true
 ) => {
 	const { fullMessage, author, sender } = decodeMessageNode(stanza, meId, meLid)
 	return {
@@ -421,19 +422,34 @@ export const decryptMessageNode = (
 							if (isRetryExhausted) {
 								logger.error(
 									errorContext,
-									`⚠️ Session corrupted after ${err.attempts} attempts. Retry+pkmsg flow will recover.`
+									`⚠️ Session corrupted and recovery failed after ${err.attempts} attempts. Auto-cleanup will attempt to recover.`
 								)
 							} else {
 								// First occurrence - log as warning since auto-recovery will attempt
 								logger.warn(errorContext, '⚠️ Corrupted session detected - attempting auto-recovery')
 							}
 
-							// Session cleanup is deferred to retry exhaustion (safety net).
-							// The Signal Protocol handles recovery naturally via retry+pkmsg:
-							// Bad MAC -> retry receipt -> sender re-sends as pkmsg -> new session.
-							// Deleting sessions here (hot path) causes cascading failures when
-							// multiple messages from the same contact arrive simultaneously.
-							// See: messages-recv.ts sendRetryRequest() for deferred cleanup.
+							// Automatic cleanup of corrupted session (if enabled)
+							// eslint-disable-next-line max-depth
+							if (autoCleanCorrupted) {
+								// eslint-disable-next-line max-depth
+								try {
+									const deletedCount = await cleanupCorruptedSession(decryptionJid, repository, logger)
+
+									// Mask only user portion of JID for privacy (preserve domain info)
+									const { user, server } = jidDecode(decryptionJid) || {}
+									const maskedUser =
+										user && user.length > 8 ? `${user.substring(0, 4)}****${user.substring(user.length - 4)}` : user
+									const maskedJid = maskedUser && server ? `${maskedUser}@${server}` : decryptionJid
+
+									logger.info(
+										{ jid: decryptionJid, maskedJid, targetedDevices: deletedCount },
+										`🔄 Session Reset | JID: ${maskedJid} | Targeted: ${deletedCount} devices | Will recreate on next message`
+									)
+								} catch (cleanupErr) {
+									logger.error({ decryptionJid, err: cleanupErr }, '❌ Failed to cleanup corrupted session')
+								}
+							}
 						} else if (isSessionRecord) {
 							// Session record errors are transient - retry should handle them
 							// eslint-disable-next-line max-depth
@@ -488,14 +504,10 @@ export function isCorruptedSessionError(error: any): boolean {
 }
 
 /**
- * Clean up corrupted session by deleting all device sessions for a JID.
- * Signal Protocol will automatically recreate the session on next message.
- *
- * NOTE: This should NOT be called on every Bad MAC error (hot path).
- * Instead, let the retry+pkmsg flow handle recovery naturally (like WhatsApp does).
- * Only call this as a safety net when retries are exhausted.
+ * Clean up corrupted session by deleting all device sessions for a JID
+ * Signal Protocol will automatically recreate the session on next message
  */
-export async function cleanupCorruptedSession(
+async function cleanupCorruptedSession(
 	jid: string,
 	repository: SignalRepositoryWithLIDStore,
 	logger: ILogger

src/Utils/event-buffer.ts

@@ -54,15 +54,15 @@ export interface BufferConfig {
  */
 export function loadBufferConfig(): BufferConfig {
 	return {
-		// perf(inbound-latency): reduced from 15s → 3s so the safety auto-flush fires sooner.
+		// perf(inbound-latency): reduced from 15s → 5s so the safety auto-flush fires sooner.
 		// processNodeWithBuffer always calls ev.flush() explicitly (no-op for this timer),
 		// but socket.ts's offline-phase buffer and any stalled buffer benefit from the lower cap.
-		bufferTimeoutMs: parseInt(process.env.BAILEYS_BUFFER_TIMEOUT_MS || '3000', 10),
+		bufferTimeoutMs: parseInt(process.env.BAILEYS_BUFFER_TIMEOUT_MS || '5000', 10),
 		minBufferTimeoutMs: parseInt(process.env.BAILEYS_BUFFER_MIN_TIMEOUT_MS || '1000', 10),
-		maxBufferTimeoutMs: parseInt(process.env.BAILEYS_BUFFER_MAX_TIMEOUT_MS || '3000', 10),
+		maxBufferTimeoutMs: parseInt(process.env.BAILEYS_BUFFER_MAX_TIMEOUT_MS || '8000', 10),
 		maxHistoryCacheSize: parseInt(process.env.BAILEYS_BUFFER_MAX_HISTORY_CACHE || '10000', 10),
 		maxBufferSize: parseInt(process.env.BAILEYS_BUFFER_MAX_SIZE || '5000', 10),
-		flushDebounceMs: parseInt(process.env.BAILEYS_BUFFER_FLUSH_DEBOUNCE_MS || '10', 10),
+		flushDebounceMs: parseInt(process.env.BAILEYS_BUFFER_FLUSH_DEBOUNCE_MS || '100', 10),
 		enableAdaptiveTimeout: process.env.BAILEYS_BUFFER_ADAPTIVE_TIMEOUT !== 'false',
 		enableMetrics: process.env.BAILEYS_BUFFER_METRICS === 'true' || process.env.BAILEYS_PROMETHEUS_ENABLED === 'true',
 		lruCleanupRatio: parseFloat(process.env.BAILEYS_BUFFER_LRU_CLEANUP_RATIO || '0.2'),

src/Utils/generics.ts

@@ -230,22 +230,14 @@ export const bindWaitForConnectionUpdate = (ev: BaileysEventEmitter) => bindWait
  * utility that fetches latest baileys version from the master branch.
  * Use to ensure your WA connection is always on the latest version
  */
-export const fetchLatestBaileysVersion = async (options: RequestInit & { timeout?: number } = {}) => {
+export const fetchLatestBaileysVersion = async (options: RequestInit = {}) => {
 	const URL = 'https://raw.githubusercontent.com/WhiskeySockets/Baileys/master/src/Defaults/index.ts'
 	try {
-		const controller = new AbortController()
-		const timeout = setTimeout(() => controller.abort(), options.timeout ?? 5000)
-		let response: Response
-		try {
-			response = await fetch(URL, {
-				dispatcher: options.dispatcher,
-				method: 'GET',
-				headers: options.headers,
-				signal: controller.signal
-			})
-		} finally {
-			clearTimeout(timeout)
-		}
+		const response = await fetch(URL, {
+			dispatcher: options.dispatcher,
+			method: 'GET',
+			headers: options.headers
+		})
 		if (!response.ok) {
 			throw new Boom(`Failed to fetch latest Baileys version: ${response.statusText}`, { statusCode: response.status })
 		}
@@ -429,36 +421,6 @@ export const getCallStatusFromNode = ({ tag, attrs }: BinaryNode) => {
 		case 'accept':
 			status = 'accept'
 			break
-		case 'preaccept':
-			status = 'preaccept'
-			break
-		case 'transport':
-			status = 'transport'
-			break
-		case 'relaylatency':
-			status = 'relaylatency'
-			break
-		case 'group_update':
-			status = 'group_update'
-			break
-		case 'reminder':
-			status = 'reminder'
-			break
-		case 'heartbeat':
-			status = 'heartbeat'
-			break
-		case 'mute_v2':
-			status = 'mute_v2'
-			break
-		case 'enc_rekey':
-			status = 'enc_rekey'
-			break
-		case 'video':
-			status = 'video'
-			break
-		case 'relay':
-			status = 'relay'
-			break
 		default:
 			status = 'ringing'
 			break

src/Utils/message-retry-manager.ts

@@ -211,33 +211,15 @@ export class MessageRetryManager {
 			}
 		}
 
-		// MAC errors require session recreation, but rate-limited to prevent loops.
-		// When multiple messages fail with Bad MAC simultaneously, only the first
-		// should trigger recreation; subsequent ones within the cooldown window
-		// piggyback on the same new session established by the retry+pkmsg flow.
+		// MAC errors require IMMEDIATE session recreation regardless of history
+		// This handles the case where contact reinstalled WhatsApp (identity key changed)
 		if (errorCode !== undefined && MAC_ERROR_CODES.has(errorCode)) {
-			const now = Date.now()
-			const prevTime = this.sessionRecreateHistory.get(jid)
-			const MAC_ERROR_COOLDOWN_MS = 10_000 // 10 seconds
-
-			if (prevTime && now - prevTime < MAC_ERROR_COOLDOWN_MS) {
-				const reasonName = RetryReason[errorCode] || `code_${errorCode}`
-				this.logger.debug(
-					{ jid, errorCode: reasonName, msSinceLast: now - prevTime },
-					'MAC error session recreation skipped — cooldown active'
-				)
-				return {
-					reason: '',
-					recreate: false
-				}
-			}
-
-			this.sessionRecreateHistory.set(jid, now)
+			this.sessionRecreateHistory.set(jid, Date.now())
 			this.statistics.sessionRecreations++
 			const reasonName = RetryReason[errorCode] || `code_${errorCode}`
 			metrics.signalMacErrors?.inc({ action: 'session_recreation' })
 			metrics.signalSessionRecreations?.inc({ reason: 'mac_error' })
-			this.logger.warn({ jid, errorCode: reasonName }, 'MAC error detected, recreating session')
+			this.logger.warn({ jid, errorCode: reasonName }, 'MAC error detected, forcing immediate session recreation')
 			return {
 				reason: `MAC error (${reasonName}) - contact may have reinstalled WhatsApp`,
 				recreate: true

src/Utils/process-message.ts

@@ -19,13 +19,10 @@ import type {
 	WAMessage,
 	WAMessageKey
 } from '../Types'
-import type { LIDMappingStore } from '../Signal/lid-mapping'
 import { WAMessageStubType } from '../Types'
 import { getContentType, normalizeMessageContent } from '../Utils/messages'
 import {
 	areJidsSameUser,
-	isAnyLidUser,
-	isAnyPnUser,
 	isHostedLidUser,
 	isHostedPnUser,
 	isJidBroadcast,
@@ -116,106 +113,46 @@ export const cleanMessage = (message: WAMessage, meId: string, meLid: string) =>
 			msgKey.remoteJid = message.key.remoteJid
 			// set participant of the message
 			msgKey.participant = msgKey.participant || message.key.participant
-		} else {
-			// fromMe reactions/polls: normalise remoteJid to match the chat JID
-			// ensures DM reaction keys are consistent with group behavior
-			msgKey.remoteJid = message.key.remoteJid
-			// in groups, normalise participant for own messages too
-			if (message.key.participant) {
-				msgKey.participant = msgKey.participant || message.key.participant
-			}
 		}
 	}
 }
 
-/**
- * Resolves a LID JID to its PN equivalent using the LID mapping store.
- * Returns the original JID if it's not a LID or if no mapping is found.
- * Safe to call with any JID type (group, newsletter, PN, etc.).
- */
-export const resolveLidToPn = async (
-	jid: string | undefined | null,
-	lidMapping: LIDMappingStore,
-	logger?: ILogger
-): Promise<string | undefined> => {
-	if (!jid) {
-		return undefined
-	}
-
-	if (isAnyLidUser(jid)) {
-		const pn = await lidMapping.getPNForLID(jid)
-		if (pn) {
-			logger?.debug({ lid: jid, pn }, 'Resolved LID to PN')
-		}
-
-		return pn || jid
-	}
-
-	return jid
-}
-
-/**
- * Normalizes a WAMessageKey by resolving LID→PN for remoteJid and participant.
- */
-export const normalizeKeyLidToPn = async (
-	key: WAMessageKey,
-	lidMapping: LIDMappingStore,
-	logger?: ILogger
-): Promise<void> => {
-	const [resolvedRemoteJid, resolvedParticipant] = await Promise.all([
-		resolveLidToPn(key.remoteJid, lidMapping, logger),
-		resolveLidToPn(key.participant, lidMapping, logger)
-	])
-	if (resolvedRemoteJid) {
-		key.remoteJid = resolvedRemoteJid
-	}
-
-	if (resolvedParticipant) {
-		key.participant = resolvedParticipant
-	}
-}
-
 export const normalizeMessageJids = async (
 	message: WAMessage,
 	signalRepository: SignalRepositoryWithLIDStore,
 	logger?: ILogger
 ): Promise<void> => {
-	const lidMapping = signalRepository.lidMapping
-	const key = message.key
-
-	// FAST PATH: Use alt JIDs directly when available (avoids LIDMappingStore race condition).
-	// The stanza always carries both formats (LID + PN) in the attributes.
-	// When addressing_mode=lid, remoteJid is LID and remoteJidAlt is PN.
-	// When addressing_mode=pn, remoteJid is already PN (no conversion needed).
-	if (key.remoteJid && isAnyLidUser(key.remoteJid) && key.remoteJidAlt && isAnyPnUser(key.remoteJidAlt)) {
-		logger?.debug({ lid: key.remoteJid, pn: key.remoteJidAlt }, 'Resolved remoteJid LID→PN via alt (fast path)')
-		key.remoteJid = key.remoteJidAlt
-	}
-
-	if (key.participant && isAnyLidUser(key.participant) && key.participantAlt && isAnyPnUser(key.participantAlt)) {
-		logger?.debug({ lid: key.participant, pn: key.participantAlt }, 'Resolved participant LID→PN via alt (fast path)')
-		key.participant = key.participantAlt
-	}
-
-	// SLOW PATH: Resolve any remaining LIDs via LIDMappingStore lookup
-	await normalizeKeyLidToPn(key, lidMapping, logger)
-
-	// Also normalize participantAlt (the alternative JID format — can be LID when addressing_mode=pn)
-	if (key.participantAlt && isAnyLidUser(key.participantAlt)) {
-		const resolved = await resolveLidToPn(key.participantAlt, lidMapping, logger)
-		if (resolved) {
-			key.participantAlt = resolved
+	const resolveLidToPn = async (jid: string | undefined | null): Promise<string | undefined> => {
+		if (!jid) {
+			return undefined
 		}
+
+		if (isLidUser(jid) || isHostedLidUser(jid)) {
+			const pn = await signalRepository.lidMapping.getPNForLID(jid)
+			if (pn) {
+				logger?.debug({ lid: jid, pn }, 'Resolved LID to PN for inbound message')
+			} else {
+				logger?.debug({ lid: jid }, 'PN not found for inbound LID, keeping LID')
+			}
+
+			return pn || jid
+		}
+
+		return jid
 	}
 
-	// Normalize nested message keys (reaction, poll) that may contain LID JIDs
-	const content = normalizeMessageContent(message.message)
-	if (content?.reactionMessage?.key) {
-		await normalizeKeyLidToPn(content.reactionMessage.key, lidMapping, logger)
+	// Execute both lookups in parallel instead of sequentially to reduce latency
+	const [resolvedRemoteJid, resolvedParticipant] = await Promise.all([
+		resolveLidToPn(message.key.remoteJid),
+		resolveLidToPn(message.key.participant)
+	])
+
+	if (resolvedRemoteJid) {
+		message.key.remoteJid = resolvedRemoteJid
 	}
 
-	if (content?.pollUpdateMessage?.pollCreationMessageKey) {
-		await normalizeKeyLidToPn(content.pollUpdateMessage.pollCreationMessageKey, lidMapping, logger)
+	if (resolvedParticipant) {
+		message.key.participant = resolvedParticipant
 	}
 }
 
@@ -589,12 +526,6 @@ const processMessage = async (
 								'CTWA: Successfully recovered message via placeholder resend'
 							)
 
-							// Normalize LID→PN in PDO-recovered message key before emitting
-							// eslint-disable-next-line max-depth
-							if (webMessageInfo.key && signalRepository) {
-								await normalizeKeyLidToPn(webMessageInfo.key as WAMessageKey, signalRepository.lidMapping, logger)
-							}
-
 							// wait till another upsert event is available, don't want it to be part of the PDO response message
 							// TODO: parse through proper message handling utilities (to add relevant key fields)
 							ev.emit('messages.upsert', {
@@ -735,13 +666,9 @@ const processMessage = async (
 						response: responseMsg
 					}
 
-					// Normalize creationMsgKey JIDs for the emitted event
-					const normalizedCreationKey = { ...creationMsgKey }
-					await normalizeKeyLidToPn(normalizedCreationKey, signalRepository.lidMapping, logger)
-
 					ev.emit('messages.update', [
 						{
-							key: normalizedCreationKey,
+							key: creationMsgKey,
 							update: {
 								eventResponses: [eventResponse]
 							}
@@ -784,7 +711,7 @@ const processMessage = async (
 			})
 		}
 
-		const participantsIncludesMe = () => participants.find(p => areJidsSameUser(meId, p.id) || areJidsSameUser(meId, p.phoneNumber))
+		const participantsIncludesMe = () => participants.find(jid => areJidsSameUser(meId, jid.phoneNumber)) // ADD SUPPORT FOR LID
 
 		switch (message.messageStubType) {
 			case WAMessageStubType.GROUP_PARTICIPANT_CHANGE_NUMBER:

src/Utils/sticker-pack.ts

@@ -2,7 +2,6 @@ import { Boom } from '@hapi/boom'
 import { createHash } from 'crypto'
 import { zipSync } from 'fflate'
 import { promises as fs } from 'fs'
-import { gzipSync, gunzipSync } from 'zlib'
 import { proto } from '../../WAProto/index.js'
 import type { MediaType } from '../Defaults/index.js'
 import type { StickerPack, WAMediaUpload, WAMediaUploadFunction } from '../Types/Message.js'
@@ -102,49 +101,6 @@ export const isAnimatedWebP = (buffer: Buffer): boolean => {
 	return false
 }
 
-/**
- * Detecta se um buffer é Lottie JSON (raw ou gzip-compressed/WAS)
- *
- * WABA usa mimetype `application/was` para stickers Lottie.
- * WAS (WhatsApp Animated Sticker) = gzip-compressed Lottie JSON.
- *
- * Detecção:
- * - Gzip (0x1f 0x8b): descomprime e verifica se é Lottie JSON
- * - JSON bruto: verifica campos Lottie obrigatórios (v, ip, op, layers)
- *
- * @param buffer - Buffer to check
- * @returns true if buffer is Lottie/WAS format
- */
-export const isLottieBuffer = (buffer: Buffer): boolean => {
-	if (buffer.length < 2) return false
-
-	let jsonBuffer: Buffer
-
-	// Check if gzip-compressed (WAS format)
-	if (buffer[0] === 0x1f && buffer[1] === 0x8b) {
-		try {
-			// SECURITY: Limit decompressed output to 50MB to prevent decompression bombs
-			jsonBuffer = gunzipSync(buffer, { maxOutputLength: 50 * 1024 * 1024 }) as Buffer
-		} catch {
-			return false
-		}
-	} else if (buffer[0] === 0x7b) {
-		// Starts with '{' - could be raw Lottie JSON
-		jsonBuffer = buffer
-	} else {
-		return false
-	}
-
-	// Validate Lottie JSON structure: must have v, ip, op, AND layers
-	try {
-		const str = jsonBuffer.toString('utf8', 0, Math.min(jsonBuffer.length, 4096))
-		// Quick check for ALL required Lottie fields
-		return str.includes('"v"') && str.includes('"layers"') && str.includes('"ip"') && str.includes('"op"')
-	} catch {
-		return false
-	}
-}
-
 /**
  * Converte uma imagem para WebP usando Sharp
  * Preserva o buffer original se já for WebP para manter EXIF e animações
@@ -158,25 +114,12 @@ export const isLottieBuffer = (buffer: Buffer): boolean => {
 const convertToWebP = async (
 	buffer: Buffer,
 	logger?: ILogger
-): Promise<{ webpBuffer: Buffer; isAnimated: boolean; isLottie: boolean }> => {
-	// Lottie/WAS: ensure gzip-compressed format (WAS = gzip Lottie JSON)
-	if (isLottieBuffer(buffer)) {
-		let wasBuffer = buffer
-		// Raw Lottie JSON (starts with '{') must be gzipped to produce valid WAS
-		if (buffer[0] === 0x7b) {
-			logger?.trace('Raw Lottie JSON detected, gzip-compressing to WAS format')
-			wasBuffer = gzipSync(buffer) as Buffer
-		}
-
-		logger?.trace('Input is Lottie/WAS format')
-		return { webpBuffer: wasBuffer, isAnimated: true, isLottie: true }
-	}
-
+): Promise<{ webpBuffer: Buffer; isAnimated: boolean }> => {
 	// Se já é WebP, preserva o buffer original (mantém EXIF e animações)
 	if (isWebPBuffer(buffer)) {
 		const isAnimated = isAnimatedWebP(buffer)
 		logger?.trace({ isAnimated }, 'Input is already WebP, preserving original buffer')
-		return { webpBuffer: buffer, isAnimated, isLottie: false }
+		return { webpBuffer: buffer, isAnimated }
 	}
 
 	// Tenta usar Sharp para converter
@@ -192,7 +135,7 @@ const convertToWebP = async (
 	logger?.trace('Converting image to WebP using Sharp')
 	const webpBuffer = await lib.sharp.default(buffer).webp().toBuffer()
 
-	return { webpBuffer, isAnimated: false, isLottie: false }
+	return { webpBuffer, isAnimated: false }
 }
 
 /**
@@ -395,11 +338,9 @@ export type PrepareStickerPackMessageOptions = {
  *
  * **Especificações WhatsApp:**
  * - 3-30 stickers por pack (oficial)
- * - WebP ou Lottie/WAS (application/was)
- * - Stickers: 512x512 pixels (auto-resize)
+ * - WebP obrigatório
  * - Recomendado: 100KB por sticker estático, 500KB animado
- * - Tray icon: 96x96 pixels (PNG no ZIP)
- * - Thumbnail: 252x252 pixels (JPEG, upload separado)
+ * - Tray icon: 252x252 pixels
  *
  * @param stickerPack - Sticker pack data with stickers, cover, name, publisher
  * @param options - Upload function and optional logger
@@ -523,36 +464,9 @@ export const prepareStickerPackMessage = async (
 				// Obtém buffer do sticker
 				const buffer = await mediaToBuffer(sticker.data, `sticker ${i + 1}`)
 
-				// Detecta formato e converte se necessário
+				// Converte para WebP
 				// eslint-disable-next-line prefer-const
-				let { webpBuffer, isAnimated, isLottie } = await convertToWebP(buffer, logger)
-
-				// Validate explicit isLottie flag — must match detected format
-				if (sticker.isLottie !== undefined && sticker.isLottie !== isLottie) {
-					throw new Boom(
-						`Sticker ${i + 1}: explicit isLottie=${sticker.isLottie} does not match detected format (detected=${isLottie})`,
-						{ statusCode: 400 }
-					)
-				}
-
-				// WABA: Enforce 512x512 dimensions for WebP stickers (Lottie is vector, skip)
-				if (!isLottie && isWebPBuffer(webpBuffer)) {
-					const lib = await getImageProcessingLibrary()
-					if (lib?.sharp) {
-						const metadata = await lib.sharp.default(webpBuffer).metadata()
-						if (metadata.width !== 512 || metadata.height !== 512) {
-							logger?.trace(
-								{ index: i, width: metadata.width, height: metadata.height },
-								'Resizing sticker to 512x512 (WABA standard)'
-							)
-							webpBuffer = await lib.sharp
-								.default(webpBuffer)
-								.resize(512, 512, { fit: 'contain', background: { r: 0, g: 0, b: 0, alpha: 0 } })
-								.webp()
-								.toBuffer()
-						}
-					}
-				}
+				let { webpBuffer, isAnimated } = await convertToWebP(buffer, logger)
 
 				// ENHANCEMENT: Auto-compression if exceeds 1MB (try quality 70, then 50)
 				const MAX_STICKER_SIZE = 1024 * 1024 // 1MB
@@ -569,7 +483,7 @@ export const prepareStickerPackMessage = async (
 					if (lib?.sharp) {
 						// Try quality 70
 						try {
-							const compressed70 = await lib.sharp.default(webpBuffer).webp({ quality: 70 }).toBuffer()
+							const compressed70 = await lib.sharp.default(buffer).webp({ quality: 70 }).toBuffer()
 
 							// eslint-disable-next-line max-depth
 							if (compressed70.length <= MAX_STICKER_SIZE) {
@@ -584,7 +498,7 @@ export const prepareStickerPackMessage = async (
 								)
 							} else {
 								// Try quality 50
-								const compressed50 = await lib.sharp.default(webpBuffer).webp({ quality: 50 }).toBuffer()
+								const compressed50 = await lib.sharp.default(buffer).webp({ quality: 50 }).toBuffer()
 
 								// eslint-disable-next-line max-depth
 								if (compressed50.length <= MAX_STICKER_SIZE) {
@@ -633,13 +547,12 @@ export const prepareStickerPackMessage = async (
 					)
 				}
 
-				// Gera nome do arquivo: hash.webp ou hash.was (WABA: plain_file_hash.ext)
+				// Gera nome do arquivo: hash.webp (deduplicação automática)
 				const sha256Hash = generateSha256Hash(webpBuffer)
-				const extension = isLottie ? 'was' : 'webp'
-				const fileName = `${sha256Hash}.${extension}`
+				const fileName = `${sha256Hash}.webp`
 
 				logger?.trace(
-					{ index: i, fileName, sizeKB: finalSizeKB.toFixed(2), isAnimated, isLottie },
+					{ index: i, fileName, sizeKB: finalSizeKB.toFixed(2), isAnimated },
 					'Sticker processed successfully'
 				)
 
@@ -647,7 +560,6 @@ export const prepareStickerPackMessage = async (
 					fileName,
 					webpBuffer,
 					isAnimated,
-					isLottie,
 					emojis: sticker.emojis || [],
 					accessibilityLabel: sticker.accessibilityLabel
 				}
@@ -666,7 +578,7 @@ export const prepareStickerPackMessage = async (
 	for (const result of processedStickers) {
 		if (!result) continue
 
-		const { fileName, webpBuffer, isAnimated, isLottie, emojis, accessibilityLabel } = result
+		const { fileName, webpBuffer, isAnimated, emojis, accessibilityLabel } = result
 
 		// SECURITY FIX #7: Check if this hash already exists (duplicate sticker)
 		const existingMetadata = metadataByHash.get(fileName)
@@ -693,14 +605,13 @@ export const prepareStickerPackMessage = async (
 			// New sticker - add to ZIP and create metadata
 			stickerData[fileName] = [new Uint8Array(webpBuffer), { level: 0 as 0 }]
 
-			// WABA: mimetype é 'application/was' para Lottie, 'image/webp' para WebP
 			const metadata: proto.Message.StickerPackMessage.ISticker = {
 				fileName,
 				isAnimated,
 				emojis,
 				accessibilityLabel,
-				isLottie,
-				mimetype: isLottie ? 'application/was' : 'image/webp'
+				isLottie: false,
+				mimetype: 'image/webp'
 			}
 
 			metadataByHash.set(fileName, metadata)
@@ -725,22 +636,10 @@ export const prepareStickerPackMessage = async (
 		logger?.trace('Processing cover image')
 		coverBuffer = await mediaToBuffer(cover, 'cover image')
 
-		// Tray icon uses PNG format, 96x96 pixels (official client standard)
-		const lib = await getImageProcessingLibrary()
-		if (!lib?.sharp) {
-			throw new Boom(
-				'Sharp library is required for cover/tray icon processing. Install with: yarn add sharp',
-				{ statusCode: 400 }
-			)
-		}
-
-		coverWebP = await lib.sharp
-			.default(coverBuffer)
-			.resize(96, 96, { fit: 'contain', background: { r: 0, g: 0, b: 0, alpha: 0 } })
-			.png()
-			.toBuffer()
-
-		coverFileName = `${stickerPackId}.png`
+		// Converte cover para WebP e adiciona ao ZIP
+		const result = await convertToWebP(coverBuffer, logger)
+		coverWebP = result.webpBuffer
+		coverFileName = `${stickerPackId}.webp`
 		stickerData[coverFileName] = [new Uint8Array(coverWebP), { level: 0 as 0 }]
 	} catch (error) {
 		throw new Boom(`Failed to process cover image: ${(error as Error).message}`, {

src/Utils/tc-token-utils.ts

@@ -159,10 +159,7 @@ export async function storeTcTokensFromIqResult({
 				[storageJid]: {
 					...existingEntry,
 					token: Buffer.from(tokenNode.content),
-					timestamp: tokenNode.attrs.t,
-					// WABA Android: resets real_issue_timestamp to null when storing a new token
-					// (UPDATE wa_trusted_contacts_send SET real_issue_timestamp=null)
-					realIssueTimestamp: null
+					timestamp: tokenNode.attrs.t
 				}
 			}
 		})

src/Utils/validate-connection.ts

@@ -14,12 +14,6 @@ import { encodeBigEndian } from './generics'
 import { createSignalIdentity } from './signal'
 
 const getUserAgent = (config: SocketConfig): proto.ClientPayload.IUserAgent => {
-	// Always use MACOS/Desktop identity for UserAgent — we connect via web
-	// protocol (WA\x06\x03) so the server expects a web-like UserAgent.
-	// Using SMB_ANDROID here causes pair code registration to fail with
-	// "não é possível conectar" even though the phone shows the confirmation.
-	// Android identity is only set in DeviceProps (registration node) which
-	// determines the display name in "Linked Devices".
 	return {
 		appVersion: {
 			primary: config.version[0],
@@ -32,6 +26,7 @@ const getUserAgent = (config: SocketConfig): proto.ClientPayload.IUserAgent => {
 		device: 'Desktop',
 		osBuildNumber: '0.1',
 		localeLanguageIso6391: 'en',
+
 		mnc: '000',
 		mcc: '000',
 		localeCountryIso31661Alpha2: config.countryCode
@@ -60,10 +55,11 @@ const getClientPayload = (config: SocketConfig) => {
 	const payload: proto.IClientPayload = {
 		connectType: proto.ClientPayload.ConnectType.WIFI_UNKNOWN,
 		connectReason: proto.ClientPayload.ConnectReason.USER_ACTIVATED,
-		userAgent: getUserAgent(config),
-		webInfo: getWebInfo(config)
+		userAgent: getUserAgent(config)
 	}
 
+	payload.webInfo = getWebInfo(config)
+
 	return payload
 }
 
@@ -88,10 +84,6 @@ export const generateLoginNode = (userJid: string, config: SocketConfig): proto.
 
 const getPlatformType = (platform: string): proto.DeviceProps.PlatformType => {
 	const platformType = platform.toUpperCase()
-	if (platformType === 'ANDROID') {
-		return proto.DeviceProps.PlatformType.ANDROID_PHONE
-	}
-
 	return (
 		proto.DeviceProps.PlatformType[platformType as keyof typeof proto.DeviceProps.PlatformType] ||
 		proto.DeviceProps.PlatformType.CHROME

src/__tests__/Socket/offline-buffer-timeout.test.ts

@@ -20,7 +20,7 @@ import { jest } from '@jest/globals'
  * bad-ack-handling.test.ts.
  */
 
-const OFFLINE_BUFFER_TIMEOUT_MS = 2_000
+const OFFLINE_BUFFER_TIMEOUT_MS = 5_000
 
 /** Mirrors the state variables declared at the top of makeSocket */
 interface OfflineBufferState {
@@ -101,10 +101,10 @@ describe('offline-buffer safety timer (socket.ts)', () => {
 	})
 
 	// -------------------------------------------------------------------------
-	// 1. Timeout path — CB:ib,,offline never arrives within 2 s
+	// 1. Timeout path — CB:ib,,offline never arrives within 5 s
 	// -------------------------------------------------------------------------
 
-	it('fires after 2 s and flushes when CB:ib,,offline is delayed', () => {
+	it('fires after 5 s and flushes when CB:ib,,offline is delayed', () => {
 		startBuffer(state, mockFlush, mockWarn)
 
 		expect(mockFlush).not.toHaveBeenCalled()
@@ -144,17 +144,17 @@ describe('offline-buffer safety timer (socket.ts)', () => {
 	})
 
 	// -------------------------------------------------------------------------
-	// 2. Happy path — CB:ib,,offline arrives before the 2 s timer fires
+	// 2. Happy path — CB:ib,,offline arrives before the 5 s timer fires
 	// -------------------------------------------------------------------------
 
 	it('CB:ib,,offline cancels the timer and flushes exactly once', () => {
 		startBuffer(state, mockFlush, mockWarn)
 
-		// Server responds before the 2 s timeout
+		// Server responds before the 5 s timeout
 		jest.advanceTimersByTime(1_000)
 		onOffline(state, mockFlush)
 
-		// Timer should be cancelled — advancing past 2 s must not cause a second flush
+		// Timer should be cancelled — advancing past 5 s must not cause a second flush
 		jest.advanceTimersByTime(OFFLINE_BUFFER_TIMEOUT_MS)
 
 		expect(mockFlush).toHaveBeenCalledTimes(1)
@@ -192,7 +192,7 @@ describe('offline-buffer safety timer (socket.ts)', () => {
 
 		onClose(state)
 
-		// Timer must be gone — advancing past 2 s must not trigger any flush
+		// Timer must be gone — advancing past 5 s must not trigger any flush
 		jest.advanceTimersByTime(OFFLINE_BUFFER_TIMEOUT_MS)
 
 		expect(mockFlush).not.toHaveBeenCalled()
@@ -236,7 +236,7 @@ describe('offline-buffer safety timer (socket.ts)', () => {
 	// 4. Boundary / timing edge cases
 	// -------------------------------------------------------------------------
 
-	it('does not flush before exactly 2 s have elapsed', () => {
+	it('does not flush before exactly 5 s have elapsed', () => {
 		startBuffer(state, mockFlush, mockWarn)
 
 		jest.advanceTimersByTime(OFFLINE_BUFFER_TIMEOUT_MS - 1)
@@ -244,7 +244,7 @@ describe('offline-buffer safety timer (socket.ts)', () => {
 		expect(mockFlush).not.toHaveBeenCalled()
 	})
 
-	it('flushes at exactly the 2 s boundary', () => {
+	it('flushes at exactly the 5 s boundary', () => {
 		startBuffer(state, mockFlush, mockWarn)
 
 		jest.advanceTimersByTime(OFFLINE_BUFFER_TIMEOUT_MS)