@jay_s_uk said in Duet 3 Standalone update from 3.3.0 to 3.4.0 failed:
@ralms https://docs.duet3d.com/User_manual/RepRapFirmware/Updating_firmware#all-other-duet-boards
fallback procedure 2 using bossa
Well, after delaying this process for a few days, expecting a nightmare and headache knowing what to do, it was actually fairly painless.
After flashing the board with Bossa its back to working normally.
Just one suggestion regarding the documentation, the Bossa section is missing a last step just confirming that we are free to reset or disconnect the board from USB and use it normally.
Thank you.