[SOLVED] Can't connect to Duet 3 mini 5+ after firmware upgrade

pkos · 2 Aug 2021, 20:02

Hi,

So it seems like my problems never end

I was working on configuring a CoreXZ printer today and I noticed some weird behavior when moving on the Z axis (seems as if movement is multiplied by 10).

I thought it might be just the firmware, so I tried updating it. I downloaded the package (zip file with all Duet2 and 3 firmwares) and uploaded it via DWC.

I was asked if I want to update, I clicked yes, and then, the board stopped and never came back up. The Status led is flashing red at about 1Hz.

I tried replacing the files on the SD card - nothing.
I tried connecting to the board with YAT and Bossa - not possible. They both immediately complain that they can't connect.

I tried switching over to Mac and trying either screen or SerialTools - I can connect, but I am not getting any responses from the board. I tried Bossa for Mac - I can connect to the board, get info on the chip, but when I try to upload the uf2 file - I get an error telling me memory is exceeded) - and I can't connect the boot to flash option.

When I connect the board to Windows - I can see for a moment - DuetBOOT appears and I have three files there (current.uf2, .html file that redirects to the Duet web site and info_uf2.txt).

It appears in the device manager just fine for about 20 seconds and then disappears.

Seems to be the same on the Mac. I tried copying the files over from DuetBOOT, but can't - I get a disconnection message almost immediately.

Any tips/hints on how to bring the board back from the dead?

jay_s_uk · 8 Feb 2021, 19:56

@pkos here you go https://duet3d.dozuki.com/Wiki/Duet_3_Mini_5plus_Firmware#Section_Updating_firmware_via_USB
It doesn't use bossa

pkos · 8 Feb 2021, 20:02

Man I'm blind... That did it! Thanks