Impossible to update RRF3 on a Duet3, USB port fail

steevebecker

Trying to update RRF3 on a Duet 3 6HC + EXP3HC.
What I do :
1 - Uploaded Duet3Firmware_EXP3HC.bin from DWC > Ok
2 - M997 B1 > OK
3 - Uploaded Duet3Firmware_MB6HC.bin > OK
4 - When installing Duet3Firmware_MB6HC.bin > error, something like : Impossible to install firmware, trying 3 times... Sorry I didn't note the exact message
5 - Trying the procedure : https://duet3d.dozuki.com/Wiki/Getting_Started_With_Duet_3#Section_Updating_Duet_3_main_board_firmware

Bossa does not see any COM port

Windows does not see any device

The USB port is in error

Translation : USB device not recognized (device descriptor request failure)

Any idea ??

dc42

Have you tried putting a jumper across the Erase pins and pressing Reset? If the Bossa port then appears, remove the jumper before you use Bossa to load firmware, otherwise it will appear to program but the verify step will fail. No need to power down while you remove the jumper.

steevebecker

Perfect, it works, the firmware is uploaded...
Thanks for your fast reply.