I downgraded to the following firmwares and the first layer calibration is working fine with these releases:
MK3 v3.5.0 (Nov 22 release), v1.0.2 MMU undetected
MK3 v3.4.2 (Oct 19 release), v1.0.2 MMU undetected
Now the caveat is this.... when downgrading and using the corresponding MMU firmwares that were with those releases.... now the MMU2 board cannot be detected
I also reseated MMU cables in the EINSY board to ensure that they were plugged in correctly.
I then went back to upgrading to the latest version 3.5.1 and MMU board 1.0.3
Results: The first layer calibration or any other print will not proceed after mesh bed leveling again. The MMU is detected and connected under the support area of the menu.
So far my findings:
- Latest firmware MK3 v3.5.1 (Dec 19 release) with v1.0.3 MMU2 board firmware
Results: Does not start print after mesh bed leveling, MMU board is detected OK
- Older firmwares listed above work
Results: prints OK but MMU board will not detect
Next steps: I will probably factory reset the MMU motherboard and proceed with v1.0.2 firmware on it to see if it makes a change
Update again :
- I went back to v.1.0.3 for the MMU motherboard and this seems to be the only version that allows the EINSY board to properly detect it, 1.0.2 the MMU is N/A on the Support menu screen
- I went to v3.5.0 and the v1.0.3 MMU now the first layer doesn't proceed
Any time the MMU is even detected the gcode to start printing after mesh bed leveling never takes place...
Now with these findings, can an admin move this thread to the firmware forum?
This is definitely a firmware issue in my case it seems, thank you!