6.2.4 Firmware for Original Prusa MK4S  

6.2.4 Firmware for Original Prusa MK4S

Summary

• Reduced USB errors
• CORE One printer detection
• Fixed returning to wrong Z position after pause
• New print fan type [XL]
• Improved extruder error detection [XL]

This is the stable release of firmware 6.2.4 for the Original Prusa MK4, MK4S, MK3.9, MK3.9S, MK3.5, MK3.5S, MINI & XL.

Reduced USB errors

We fixed a rare condition that could occasionally trigger a “USB Error” pause during printing.

CORE One printer detection

The firmware brings a new bootloader version 2.4.1, which is able to recognize MK4S from CORE One (based on whether the door sensor is connected).

NOTE: Before you convert your MK4S to CORE One you need to update the FW to 6.2.4. If xBuddy is already connected in CORE One and the door sensor is attached, the bootloader refuses to update. We will remind you of this in the MK4S to CORE One Conversion Guide.

Fixed returning to wrong Z position after pause

When unpausing, the printer was not applying the MBL correction to the unpark move.
This was already fixed in 6.2.3, but 6.2.3 was only released for MK4 and MK3.5. 6.2.4 brings this fix to the XL as well.

New print fan type [XL]

We have extended our list of suppliers for print fans on the XL. The new fans have slightly different properties. Since the printer cannot automatically detect which fan is installed, we have added a settings option (Settings -> Tools Settings -> Print Type Fan) for selecting the correct fan type the printer is equipped with.

Improved extruder error detection [XL]

Extruder errors (extruder not spinning) should no longer trigger for parked tools.

Release notes:  https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag/v6.2.4