You are reading a single comment by @user157250 and its replies.
Click here to read the full conversation.
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.
user157250
This is SMA Q3 firmware, not Bangle.js 2. (Maybe) same hardware, different software.
Either return it or you need SWD debugger dongle to reflash the firmware via 4 pins on the back.
Not hard but you need to mess with wires and get some SWD dongle or use Raspberry Pi or Pico for that.