FW upgrade to 1.9.6 fails

Hi there, i’m trying to upgrade my 2 Nuki Locks Gen 1 from FW 1.9.3 to 1.9.6. The app is advertising this correctly, but every try reach a failure, the system getting stuck at something like 31%. I’m using an Samsung S8, Android 9. Both locks are showing absolutely the same behavior. Thanks, Serban

Do you have a Galaxy watch or other Bluetooth device/wearable paired… or some other app listening to Bluetooth? Just turn those devices off or disconnect them, and retry.