device no longer recognized

[jjm202]

Hello,

After going through the steps to program the dongle with a .uf2 image, we can no longer update the firmware with a newer .uf2 image, as the device is no longer recognized (hold the reset button and insert the device into USB slot). What is the trick so it's recognized as a storage device again so we can drag & drop the new firmware image?

Thanks

*Glad to see no one is supporting this repo, btw

[yloose]

Did you find a solution?

[jjm202]

Did you find a solution?

There was some kind of pattern with the button that put it back into programming mode. I can't recall exactly what it was anymore.

[caizelin]

Here is the updated programming guide: https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle/programming/.
If your UF2 Bootloader gets corrupted somehow, you can use an external debugger to program it again.

[yloose]

You can use an external debugger to program it again.

Yeah, thanks that was what I ended up doing. Working well now again. 👍