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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@user149803
I used the watch a lot until it would not connect, then I just used it for the time (which lost a minute, then two, then three over several months), until I misplaced it.
I have factory reset. The apps page allows me to connect, but disconnects when I try to upload the firmware update (I'm at v 12 I think) and/or the bootloader update (bootloader unknown).
I've been unsuccessful in using the two Android nrf apps to upload the firmware upgrade. Both disconnect me before the firmware file can be uploaded. nrfConnect starts uploading but stays at 0%, while the app toggles between connected and disconnected, finally going back to the "Devices > Generic Access" etc. screen and "Disconnected".
I now cannot reboot the watch. It is stuck on the display "SW Reset > DFU 2V12 > CHECK STORAGE > NO NEW FM > BANKD INVALID > BTN1 = REBOOT"