diff --git a/TelegramCore.xcodeproj/project.pbxproj b/TelegramCore.xcodeproj/project.pbxproj
index 0ce2e57b70..555187e023 100644
--- a/TelegramCore.xcodeproj/project.pbxproj
+++ b/TelegramCore.xcodeproj/project.pbxproj
@@ -39,6 +39,8 @@
 		C27982511E72C97800262BFD /* MacosLegacy.swift in Sources */ = {isa = PBXBuildFile; fileRef = C27982501E72C97800262BFD /* MacosLegacy.swift */; };
 		C28725421EF967E700613564 /* NotificationInfoMessageAttribute.swift in Sources */ = {isa = PBXBuildFile; fileRef = C28725411EF967E700613564 /* NotificationInfoMessageAttribute.swift */; };
 		C28725431EF967E700613564 /* NotificationInfoMessageAttribute.swift in Sources */ = {isa = PBXBuildFile; fileRef = C28725411EF967E700613564 /* NotificationInfoMessageAttribute.swift */; };
+		C28D3CF020D3DA900027F4D6 /* DeepLinkInfo.swift in Sources */ = {isa = PBXBuildFile; fileRef = C28D3CEF20D3DA900027F4D6 /* DeepLinkInfo.swift */; };
+		C28D3CF120D3DAA30027F4D6 /* DeepLinkInfo.swift in Sources */ = {isa = PBXBuildFile; fileRef = C28D3CEF20D3DA900027F4D6 /* DeepLinkInfo.swift */; };
 		C29340F31F5080FA0074991E /* UpdateGroupSpecificStickerset.swift in Sources */ = {isa = PBXBuildFile; fileRef = C29340F21F5080FA0074991E /* UpdateGroupSpecificStickerset.swift */; };
 		C29340F41F5081280074991E /* UpdateGroupSpecificStickerset.swift in Sources */ = {isa = PBXBuildFile; fileRef = C29340F21F5080FA0074991E /* UpdateGroupSpecificStickerset.swift */; };
 		C2A315C01E2E776A00D89000 /* RequestStartBot.swift in Sources */ = {isa = PBXBuildFile; fileRef = D01749581E1092BC0057C89A /* RequestStartBot.swift */; };
@@ -740,6 +742,7 @@
 		C251D7421E65E50500283EDE /* StickerSetInstallation.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = StickerSetInstallation.swift; sourceTree = "<group>"; };
 		C27982501E72C97800262BFD /* MacosLegacy.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = MacosLegacy.swift; sourceTree = "<group>"; };
 		C28725411EF967E700613564 /* NotificationInfoMessageAttribute.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = NotificationInfoMessageAttribute.swift; sourceTree = "<group>"; };
+		C28D3CEF20D3DA900027F4D6 /* DeepLinkInfo.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DeepLinkInfo.swift; sourceTree = "<group>"; };
 		C29340F21F5080FA0074991E /* UpdateGroupSpecificStickerset.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = UpdateGroupSpecificStickerset.swift; sourceTree = "<group>"; };
 		C2E064671ECEEF0A00387BB8 /* TelegramMediaInvoice.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = TelegramMediaInvoice.swift; sourceTree = "<group>"; };
 		C2E0646C1ECF171D00387BB8 /* TelegramMediaWebDocument.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = TelegramMediaWebDocument.swift; sourceTree = "<group>"; };
@@ -1262,6 +1265,7 @@
 				D01C06B61FBBA269001561AB /* CanSendMessagesToPeer.swift */,
 				D0F8C39F2017AF2700236FC5 /* GlobalTelegramCoreConfiguration.swift */,
 				D0E412E9206AD18E00BEE4A2 /* DecryptedResourceData.swift */,
+				C28D3CEF20D3DA900027F4D6 /* DeepLinkInfo.swift */,
 			);
 			name = Utils;
 			sourceTree = "<group>";
@@ -2240,6 +2244,7 @@
 				D0BE304B20627D9800FBE6D8 /* AccessSecureId.swift in Sources */,
 				D0BEAF5D1E54941B00BD963D /* Authorization.swift in Sources */,
 				D0C26D6C1FE286C3004ABF18 /* FetchChatList.swift in Sources */,
+				C28D3CF020D3DA900027F4D6 /* DeepLinkInfo.swift in Sources */,
 				D0B843831DA6EDB8005F29E1 /* CachedGroupData.swift in Sources */,
 				D0E35A121DE4A25E00BC6096 /* OutgoingChatContextResultMessageAttribute.swift in Sources */,
 				D093D806206539D000BC3599 /* SaveSecureIdValue.swift in Sources */,
@@ -2365,6 +2370,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				C28D3CF120D3DAA30027F4D6 /* DeepLinkInfo.swift in Sources */,
 				9FC8ADAC206BC00A0094F7B4 /* RecentWebSessions.swift in Sources */,
 				9FC8ADA9206BBD000094F7B4 /* SaveSecureIdValue.swift in Sources */,
 				9F10CE8C20613CDB002DD61A /* TelegramDeviceContactImportInfo.swift in Sources */,
diff --git a/TelegramCore/ChannelAdmins.swift b/TelegramCore/ChannelAdmins.swift
index 5ff4882ba3..020ff331b9 100644
--- a/TelegramCore/ChannelAdmins.swift
+++ b/TelegramCore/ChannelAdmins.swift
@@ -57,12 +57,22 @@ public func channelAdmins(account: Account, peerId: PeerId) -> Signal<[RenderedC
 }
 
 public func channelAdminIds(postbox: Postbox, network: Network, peerId: PeerId, hash: Int32) -> Signal<[PeerId], Void> {
-    return postbox.modify { modifier in
-        if let peer = modifier.getPeer(peerId) as? TelegramChannel, case .group = peer.info, let apiChannel = apiInputChannel(peer) {
+    return postbox.transaction { transaction in
+        if let peer = transaction.getPeer(peerId) as? TelegramChannel, case .group = peer.info, let apiChannel = apiInputChannel(peer) {
             let api = Api.functions.channels.getParticipants(channel: apiChannel, filter: .channelParticipantsAdmins, offset: 0, limit: 100, hash: hash)
             return network.request(api) |> retryRequest |> mapToSignal { result in
                 switch result {
-                case let .channelParticipants(_, _, users):
+                case let .channelParticipants(_, participants, users):
+                    let users = users.filter({ user in
+                        return participants.contains(where: { participant in
+                            switch participant {
+                            case let .channelParticipantAdmin(_, userId, _, _, _, _):
+                                return user.peerId.id == userId
+                            default:
+                                return false
+                            }
+                        })
+                    })
                     return .single(users.map({TelegramUser(user: $0).id}))
                 default:
                     return .complete()
diff --git a/TelegramCore/DeepLinkInfo.swift b/TelegramCore/DeepLinkInfo.swift
new file mode 100644
index 0000000000..ca71be6476
--- /dev/null
+++ b/TelegramCore/DeepLinkInfo.swift
@@ -0,0 +1,23 @@
+import Foundation
+#if os(macOS)
+import SwiftSignalKitMac
+#else
+import SwiftSignalKit
+#endif
+
+public struct DeepLinkInfo {
+    public let message: String
+    public let entities: [MessageTextEntity]
+    public let updateApp: Bool
+}
+
+public func getDeepLinkInfo(network: Network, path: String) -> Signal<DeepLinkInfo?, Void> {
+    return network.request(Api.functions.help.getDeepLinkInfo(path: path)) |> retryRequest |> map { value -> DeepLinkInfo? in
+        switch value {
+        case .deepLinkInfoEmpty:
+            return nil
+        case let .deepLinkInfo(flags, message, entities):
+            return DeepLinkInfo(message: message, entities: entities != nil ? messageTextEntitiesFromApiEntities(entities!) : [], updateApp: (flags & (1 << 0)) != 0)
+        }
+    }
+}
diff --git a/TelegramCore/RequestChatContextResults.swift b/TelegramCore/RequestChatContextResults.swift
index 52245edc88..5d4c0df0b6 100644
--- a/TelegramCore/RequestChatContextResults.swift
+++ b/TelegramCore/RequestChatContextResults.swift
@@ -19,8 +19,8 @@ public struct ChatContextGeoPoint {
 }
 
 public func requestChatContextResults(account: Account, botId: PeerId, peerId: PeerId, query: String, offset: String, geopoint: ChatContextGeoPoint? = nil) -> Signal<ChatContextResultCollection?, NoError> {
-    return account.postbox.modify { modifier -> (bot: Peer, peer: Peer)? in
-        if let bot = modifier.getPeer(botId), let peer = modifier.getPeer(peerId) {
+    return account.postbox.transaction { transaction -> (bot: Peer, peer: Peer)? in
+        if let bot = transaction.getPeer(botId), let peer = transaction.getPeer(peerId) {
             return (bot, peer)
         } else {
             return nil
diff --git a/TelegramCore/RequestSecureIdForm.swift b/TelegramCore/RequestSecureIdForm.swift
index f4c19ec30a..eaf4161fd9 100644
--- a/TelegramCore/RequestSecureIdForm.swift
+++ b/TelegramCore/RequestSecureIdForm.swift
@@ -12,6 +12,7 @@ import Foundation
 public enum RequestSecureIdFormError {
     case generic
     case serverError(String)
+    case versionOutdated
 }
 
 private func parseSecureValueType(_ type: Api.SecureValueType, selfie: Bool) -> SecureIdRequestedFormField {
@@ -238,7 +239,13 @@ public func requestSecureIdForm(postbox: Postbox, network: Network, peerId: Peer
     }
     return network.request(Api.functions.account.getAuthorizationForm(botId: peerId.id, scope: scope, publicKey: publicKey))
     |> mapError { error -> RequestSecureIdFormError in
-        return .serverError(error.errorDescription)
+        switch error.errorDescription {
+        case "APP_VERSION_OUTDATED":
+            return .versionOutdated
+        default:
+            return .serverError(error.errorDescription)
+        }
+        
     }
     |> mapToSignal { result -> Signal<EncryptedSecureIdForm, RequestSecureIdFormError> in
         return postbox.transaction { transaction -> EncryptedSecureIdForm in