Aaargh, it's currently 35$ at banggood hate u all :)
Looks like there are 4 pins on the back of the watch. Can you flash new firmware without opening it? But honestly should just wait for you to do the work, already have too many half-done projects...
No, the firmware is signed. You can do it with all other nrf52832 devices from that company because they use SDK11 however this is 52840 chip so with that one they moved to later SDK => signed firware. More info 2 pages back in this topic.
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Aaargh, it's currently 35$ at banggood hate u all :)
Looks like there are 4 pins on the back of the watch. Can you flash new firmware without opening it? But honestly should just wait for you to do the work, already have too many half-done projects...