diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/DevgroupRepository.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/DevgroupRepository.kt
index 38668a38d..6252d47fe 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/DevgroupRepository.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/DevgroupRepository.kt
@@ -10,6 +10,7 @@ data class DeviceInvitation(val id: String, val peer: String, val outgoing: Bool
 data class DevgroupState(val name: String = "", val member: Boolean = false, val invitations: List<DeviceInvitation> = emptyList(),
     val pin: String = "", val failed: Boolean = false, val outgoingVisible: Boolean = false,
     val leaving: Boolean = false, val leaveFailed: Boolean = false,
+    val renaming: Boolean = false, val renameFailed: Boolean = false,
     val outgoingId: String = "", val accepting: String = "", val dismissed: Set<String> = emptySet())
 
 /** Только main thread; PIN хранится до закрытия диалога, входящие/результаты не пишутся в лог. */
@@ -22,12 +23,15 @@ object DevgroupRepository {
         if (action == 0 && pending.containsValue(0)) return
         if (action == 1) mutable.value = mutable.value.copy(outgoingVisible = true, outgoingId = "", pin = "", failed = false)
         if (action == 2) mutable.value = mutable.value.copy(accepting = text, failed = false)
+        if (action == 3) mutable.value = mutable.value.copy(renaming = true, renameFailed = false)
         if (action == 4) mutable.value = mutable.value.copy(leaving = true, leaveFailed = false)
         val id = ++nextId
         if (NativeLib.devgroupCommand(action, group, peer, text, pin, id)) pending[id] = action
-        else { LogManager.addLog("WARN", "Devgroup", "Core rejected request action=$action"); mutable.value = mutable.value.copy(failed = true, accepting = "", leaving = false, leaveFailed = action == 4) }
+        else { LogManager.addLog("WARN", "Devgroup", "Core rejected request action=$action"); mutable.value = mutable.value.copy(
+            failed = true, accepting = "", leaving = false, leaveFailed = action == 4, renaming = false, renameFailed = action == 3) }
     }
     fun dismissLeaveError() { mutable.value = mutable.value.copy(leaveFailed = false) }
+    fun dismissRenameError() { mutable.value = mutable.value.copy(renameFailed = false) }
     fun closeOutgoing() { mutable.value = mutable.value.copy(outgoingVisible = false, outgoingId = "", pin = "", failed = false) }
     fun dismissIncoming(id: String) { mutable.value = mutable.value.copy(dismissed = mutable.value.dismissed + id, failed = false) }
     fun onEvent(type: Int, data: ByteArray?) {
@@ -37,17 +41,23 @@ object DevgroupRepository {
         if (type != 71 || data == null || data.size < 9) return
         val id = ByteBuffer.wrap(data).order(ByteOrder.LITTLE_ENDIAN).long
         val action = pending.remove(id) ?: return
-        if (data[8].toInt() != 1) { mutable.value = mutable.value.copy(failed = true, accepting = "", leaving = false, leaveFailed = action == 4); return }
+        if (data[8].toInt() != 1) {
+            LogManager.addLog("WARN", "Devgroup", "Core operation failed action=$action")
+            mutable.value = mutable.value.copy(failed = true, accepting = "", leaving = false, leaveFailed = action == 4,
+                renaming = false, renameFailed = action == 3); return
+        }
         val json = JSONObject(String(data, 9, data.size - 9, Charsets.UTF_8))
         if (action == 1) {
             if (mutable.value.outgoingVisible) mutable.value = mutable.value.copy(pin = json.getString("pin"), outgoingId = json.getString("id"), failed = false)
             return
         }
         val invitations = json.getJSONArray("invitations")
+        if (action == 3) LogManager.addLog("INFO", "Devgroup", "Device group renamed")
         mutable.value = mutable.value.copy(name = json.getString("name"), member = json.getString("group").isNotEmpty(),
             invitations = List(invitations.length()) { i -> val entry = invitations.getJSONObject(i)
                 DeviceInvitation(entry.getString("id"), entry.getString("peer"), entry.getInt("outgoing") != 0, entry.getInt("state")) },
             leaving = if (action == 4) false else mutable.value.leaving,
+            renaming = if (action == 3) false else mutable.value.renaming,
             accepting = if (action == 2) "" else mutable.value.accepting,
             failed = if (action == 0) mutable.value.failed else false)
     }