3.12.1-RC1 Firmware for MK3, MK3S, MK3S+
Greetings all;
With the help of the community, a few bugs were discovered with the final release of version 3.12.0. We would like to thank those members and also encourage others to report any issues that they might discover through our github page.
Summary
- Restore correct RPM for fans
- Set the calibration state when running M310 A
- Non responding MMU2S fixed
- Max Z-coordinate during Nozzle Change
- MK2.5 beeping after Factory reset
This is the first release candidate of firmware 3.12.1 focused on bug fixes and small improvements.
Restore correct RPM for fans
In case of a Temp model error both fans spin at full speed to cool down the nozzle as fast as possible. In firmware 3.12.0 the fans kept spinning at 100 % RPM even after the TM error was cleared. This has been fixed now and the fan speeds are regulated based on the current temperatures.
Thanks to our community members @gregsaun, @Aldebaran91, @arekm, @matthew-humphrey reporting the issue.
Set the calibration state when running M310 A
Calibrating the Thermal model using the G-code command M310 A F0 didn’t set the TM calibration state correctly. This is now fixed and calibration stored as expected.
Kudos to our community members @arekm, @FrHePo and @gregsaun for reporting this issue.
Non responding MMU2S fixed
Firmware 3.12.0 accidentally introduced a bug, where the MMU2S unit might stop responding in case of an error. For more details, see issue #3742. This is now fixed and the unit will work as expected.
We would like to thank our community members @RPospisil, @ursius2020, @E-Extrude, @Hauzman, @Mirarkitty and @3dprintandpaint for reporting this bug and retesting the fix.
Max Z-coordinate during Nozzle Change
In case the “Nozzle Change” feature is used, the printer will raise the extruder to its max Z-coordinate value making the nozzle exchange easier.
This change was done based on the request from our community member @laskr1999.
MK2.5 beeping after Factory reset
Some users have reported that MK2.5 and MK2.5S printers keep on beeping after the Factory reset is performed. This release fixes the issue.
Kudos @cjshaker for reporting this issue.
Please report any bug here:
https://github.com/prusa3d/Prusa-Firmware/issues
Download Link:
https://github.com/prusa3d/Prusa-Firmware/releases/tag/v3.12.1-RC1
How to flash the firmware:
https://help.prusa3d.com/en/article/firmware-updating-mk3s-mk3s-mk3_2227
Shane (AKA FromPrusa)
RE:
For folks waiting for the non-RC version, looks like 3.12.1 has been out for a bit.
I was waiting for the announcement myself, and accidentally realized it was out while looking at the G-code settings for the printer (I have a custom printer profile because my nozzle needs faster retraction speeds, but because base profile changes will not modify the custom one, I would not get firmware update notifications).
EDIT: Download Link:
https://github.com/prusa3d/Prusa-Firmware/releases/tag/v3.12.1