Firmware 3.5.1-FINAL for Original Prusa i3 MK2.5
Hi guys,
new firmware 3.5.1-FINAL is out! This is a final release recommended to all users 😎
What is new?
Summary:
- Button click fix
- M220 speed factor
- Z-levelling fix (MK3)
- Pause print -> stop print fix
Detailed description of changes:
Button click fix
The function for button press evaluation and debouncing was modified in previous firmware version to make the code more accessible for the future. However, this code improvement introduced a bug which could cause that some fullscreen messages which waited for the user to press the button were skipped. This has been fixed.
M220 speed factor
On multi-material printers, speed factor is currently set to 100 % before filament change by Slic3r PE. This ensures that filament change will proceed with defined speed and thus higher reliability.
There is now a possibility to save and restore speed factor on MK2.5 and MK3 printers using the following G-codes:
M220 Sxxx sets speed factor
M220 B sets backups current speed factor
M220 Sxxx B sets speed factor and backups current speed factor
M220 R restore saved speed factor
These M-codes are the same as on MK2 printers with Firmware 3.1.0 and allows Slic3r PE to backup speed factor set by the user (by rotating the knob on the printer) before filament change and then to restore is when filament change if finished. This will fix issues #1364 and #1208.
Z-levelling fix (MK3)
Z-levelling function introduced in previous Firmware 3.5.0 could repeatedly fail (X-axis staying at the top with a message "Some problem encountered, Z-leveling enforced ...") on MK3 printers under certain conditions. This has been fixed.
Pause print -> stop print fix
Stopping paused print could lead to behaviour when some movements were missing during new print or first layer calibration. This has been fixed.
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Supported printers:
Original Prusa i3 MK3
Original Prusa i3 MK3 Multi Material 2.0
Original Prusa i3 MK2.5
Original Prusa i3 MK2.5 Multi Material 2.0
Download link:
https://www.prusa3d.com/drivers/
Firmware flashing guide:
https://manual.prusa3d.com/Guide/Upgrading+the+firmware+v1.5/66
Please report any bug here:
https://github.com/prusa3d/Prusa-Firmware/issues
As always, we wish you happy printing and look forward to your feedback!
Re: Firmware 3.5.1-FINAL for Original Prusa i3 MK2.5
Hi guys,
maybe I found an issue.
I've upgraded fom 3.4.2 to 3.5.1
With the new frirmware it is not possible to heat the bed over 100°C.
After 10 minutes and 102°C it gives an BED PREHEAT ERROR and the part cooling fan runs by 100% speed.
It is reproduceable.
It also looks that it happens also with the firmware 3.5.0.
So for now I've downgraded to 3.4.2 because sometimes I need to print colorFabb HT for that I need 120°C.
Please check.
Re: Firmware 3.5.1-FINAL for Original Prusa i3 MK2.5
I have a MK2.5 as well and was not able to successfully print with ABS (bed temp at 110 C) and now that you pointed it out it seems like about 10 minutes into the print is when it fails. because of this I reverted back to 3.5.0 since i got the same results as you i reverted back to 3.4.2 and it is now working. hopefully they fix this bug soon