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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.
@user157437
A friend of mine recently purchased a Bangle js 2 from a vendor. It was delivered with the SMA-Q3 firmware installed, NOT the Espruino firmware, although it was delivered in a Bangle box. I have a correctly programmed Bangle js 2, and when I follow the instructions, can cause mine to publish the DfuTarg BLE, program it, update the firmware, etc. The SMA-Q3, expectedly, will not do ANY of these things.
My friend did not receive good support from the company that sold it to him.. Ultimately, he sent it to me.
Is there any way to save the firmware on it, and refresh it to the ESPRUINO firmware without a JTAG/SWD debugger such as this? https://www.adafruit.com/product/2209 I know there is a cheaper version of the debugger, but we do not want to use that.