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We can confirm that our UM3 has exactly the described problems. Printing with the 2nd extruder was really a pain, ending in time consuming calibration orgies, but with little success.
Back on firmware 4.3.3 everything is working fine again! Thumbs up for all the helping members in this community.
Thumbs down for Ultimaker releasing such a annoying firmware. Furthermore it isn't so easy to find the recovery image and knowing this will lead to version 4.3.3 again.
So, download the recovery.img here: Link (-> 4.3.3)
UM3 NOZZLE 2 always leveled too close to bed after active leveling
in UltiMaker 3D printers
Posted
Thanks a lot for this thread.
We can confirm that our UM3 has exactly the described problems. Printing with the 2nd extruder was really a pain, ending in time consuming calibration orgies, but with little success.
Back on firmware 4.3.3 everything is working fine again! Thumbs up for all the helping members in this community.
Thumbs down for Ultimaker releasing such a annoying firmware. Furthermore it isn't so easy to find the recovery image and knowing this will lead to version 4.3.3 again.
So, download the recovery.img here: Link (-> 4.3.3)
Follow the instructions here: Link
The downgrade process itself is simple.
Is it possible to deactivate the update firmware hints?