Bluetooth & BLU

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• ShellyShelly BLU device unresponsive after a failed update: rescue via bootloader modeIf a BLU device's firmware update aborts, the official documentation says it stays in bootloader mode. The update can be repeated from there: forget the device in your phone's Bluetooth settings, reinsert the battery, select it in the Shelly Debug app within about 40 seconds and start a slow OTA update. Shelly recommends an Android phone for this.Battery-powered BLU devices, e.g. BLU TRV, BLU Button, BLU H&T, BLU Door/Window, BLU Motion · 2026-11-03