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makerdiary / nrf52840-mdk-usb-dongle

An open-source, small and low-cost USB Dongle that supports Bluetooth 5.4, Bluetooth mesh, Thread, Zigbee, 802.15.4, ANT and 2.4 GHz proprietary protocols
https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle/
Apache License 2.0
300 stars 79 forks source link

device no longer recognized #86

Open jjm202 opened 1 year ago

jjm202 commented 1 year ago

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 commented 11 months ago

Did you find a solution?

jjm202 commented 11 months ago

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 commented 11 months ago

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 commented 10 months ago

You can use an external debugger to program it again.

Yeah, thanks that was what I ended up doing. Working well now again. :+1: