@ckeithley said in Can't connect to duet Web just says connecting:
How were you able to resolve the problem? I am dealing with the exact same thing after mistakenly trying to upgrade 2.05 directly to 3.4.4. I've literally tried everything I can think of with no success.
You can use Bossa software to directly flash the latest firmware to the board.
https://docs.duet3d.com/en/User_manual/RepRapFirmware/Updating_firmware#fallback-procedure-2
You would also need to manually update the DWC files on the SD card with the matching version for the firmware.