This video shows how to upload a custom firmware onto the Colmi Smart Bluetooth ring via my WebBluetooth enabled tool.
Get the Colmi Smart Ring here:
https://s.click.aliexpress.com/e/_Dcy...
The Repository and tool can be found here:
https://github.com/atc1441/ATC_RF03_Ring
Part 1:
• Hacking a tiny Bluetooth Smart Ring
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