diff --git a/pymammotion/bluetooth/ble.py b/pymammotion/bluetooth/ble.py
index 6d6a856..9e1ec0d 100644
--- a/pymammotion/bluetooth/ble.py
+++ b/pymammotion/bluetooth/ble.py
@@ -7,9 +7,6 @@
 )
 from pymammotion.event.event import BleNotificationEvent
 
-# TODO setup for each Luba
-address = "90:38:0C:6E:EE:9E"
-
 
 class MammotionBLE:
     client: BleakClient
@@ -24,9 +21,9 @@ def scanCallback(device, advertising_data) -> bool:
             # TODO: do something with incoming data
             print(device)
             print(advertising_data)
-            if device.address == "90:38:0C:6E:EE:9E":
-                return True
-            if advertising_data.local_name and "Luba-" in advertising_data.local_name:
+            if advertising_data.local_name and (
+                "Luba-" in advertising_data.local_name or "Yuka-" in advertising_data.local_name
+            ):
                 return True
             return False
 
diff --git a/pymammotion/mammotion/devices/mammotion_bluetooth.py b/pymammotion/mammotion/devices/mammotion_bluetooth.py
index 495bc90..75ad7aa 100644
--- a/pymammotion/mammotion/devices/mammotion_bluetooth.py
+++ b/pymammotion/mammotion/devices/mammotion_bluetooth.py
@@ -97,9 +97,10 @@ def update_device(self, device: BLEDevice) -> None:
         self._device = device
 
     async def _ble_sync(self) -> None:
-        _LOGGER.debug("BLE SYNC")
-        command_bytes = self._commands.send_todev_ble_sync(2)
-        await self._message.post_custom_data_bytes(command_bytes)
+        if self._client is not None and self._client.is_connected:
+            _LOGGER.debug("BLE SYNC")
+            command_bytes = self._commands.send_todev_ble_sync(2)
+            await self._message.post_custom_data_bytes(command_bytes)
 
     async def run_periodic_sync_task(self) -> None:
         """Send ble sync to robot."""
@@ -321,6 +322,7 @@ async def _notification_handler(self, _sender: BleakGATTCharacteristic, data: by
                 self._update_raw_data(data)
             except (KeyError, ValueError, IndexError, UnicodeDecodeError):
                 _LOGGER.exception("Error parsing message %s", data)
+                data = b""
             finally:
                 self._message.clearNotification()
 
@@ -379,11 +381,9 @@ def _resolve_characteristics(self, services: BleakGATTServiceCollection) -> None
         """Resolve characteristics."""
         self._read_char = services.get_characteristic(READ_CHAR_UUID)
         if not self._read_char:
-            self._read_char = READ_CHAR_UUID
             _LOGGER.error(CharacteristicMissingError(READ_CHAR_UUID))
         self._write_char = services.get_characteristic(WRITE_CHAR_UUID)
         if not self._write_char:
-            self._write_char = WRITE_CHAR_UUID
             _LOGGER.error(CharacteristicMissingError(WRITE_CHAR_UUID))
 
     def _reset_disconnect_timer(self) -> None:
diff --git a/pymammotion/proto/mctrl_nav.proto b/pymammotion/proto/mctrl_nav.proto
index 5b7f0cd..a99c86b 100644
--- a/pymammotion/proto/mctrl_nav.proto
+++ b/pymammotion/proto/mctrl_nav.proto
@@ -174,7 +174,7 @@ message NavGetCommDataAck {
 
 message NavReqCoverPath {
   int32 pver = 1;
-  int64 jobId = 2;
+  fixed64 jobId = 2;
   int32 jobVer = 3;
   int32 jobMode = 4;
   int32 subCmd = 5;
@@ -195,7 +195,7 @@ message NavReqCoverPath {
 
 message NavUploadZigZagResult {
   int32 pver = 1;
-  int64 jobId = 2;
+  fixed64 jobId = 2;
   int32 jobVer = 3;
   int32 result = 4;
   int32 area = 5;
diff --git a/pyproject.toml b/pyproject.toml
index b546586..52a3574 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,10 +1,10 @@
 [project]
 name        = "pymammotion"
-version     = "0.2.68"
+version     = "0.2.73"
 
 [tool.poetry]
 name        = "pymammotion"
-version     = "0.2.68"
+version     = "0.2.73"
 license     = "GNU-3.0"
 description = ""
 readme      = "README.md"
@@ -61,7 +61,7 @@ mypy = "^1.11.2"
 autotyping = "^24.3.0"
 
 [tool.bumpver]
-current_version = "0.2.68"
+current_version = "0.2.73"
 version_pattern = "MAJOR.MINOR.PATCH"
 commit_message  = "Bump version {old_version} -> {new_version}"
 commit          = true