So you see the 4th image with Bangle logo and then it restarts itself to first image? Does the progress bar in second image goes like this till the end even if you don't push/hold the button at all?
It would work exactly like that if the button would be stuck and always pressed. So maybe it is stuck in pressed state.
Because normally the progress bar would not show at all unless you are holding the button (it says "release BTN1 for DFU" because it thinks the button is pressed).
Also holding the button prevents watchdog kicking (by design, to have a way to reboot when device is stuck) so the watchdog reboots the device after some time and it starts over.
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