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When I select it, the watch displays "Connected", and a couple of seconds after, says "Disconnected".
On the laptop/mobile side, the bluetooth app says it could pairing was rejected.What does it mean 'when I select it'?
You should not use laptop app/browser and should not 'pair it' in this mode.
See https://www.espruino.com/Bangle.js#firmware-updates for the procedure.
There is nrfConnect or nrfToolbox app for Android to do this DFU update.
fanoush
Hello there, and sorry to re-open the discussion.
When I set my bangle in DFU mode (hold BTN1 + BTN2 until it reboot, and release before the === line is complete), I can see "DfuTarg" bluetooth device in my bluetooth discovery app (laptop and mobile).
When I select it, the watch displays "Connected", and a couple of seconds after, says "Disconnected".
On the laptop/mobile side, the bluetooth app says it could pairing was rejected.
I am pretty annoyed, because my previous attempt to upload a new Firmware failed before completion, and the watch can not boot any more...