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6.2.4 Firmware for Original Prusa XL  

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Jan Kratochvíl
(@jan-kratochvil)
Member Admin
6.2.4 Firmware for Original Prusa XL

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

Posted : 15/04/2025 12:16 pm
amundsen
(@amundsen-2)
Eminent Member
RE:

Please add .1 and .15mm settings for nozzle diameters in the firmware, which is a possible setup with the V6 adapter from Prusa.

 
Posted : 15/04/2025 2:05 pm
Kurt Gluck
(@kurt-gluck)
Eminent Member
RE: 6.2.4 Firmware for Original Prusa XL

So, these new XL  fans are the better ?   The late 2023 XL's definitely don't have good part cooling.   It would be nice if there was a change list on the XL that listed the improvements made by time and maybe someday we would have an XL-S that would bring us all up to date, perhaps with improved cooling (maybe Cpap on the tool handler 🙂 ).

 

 

Posted : 18/04/2025 2:53 am
1 people liked
amundsen
(@amundsen-2)
Eminent Member
RE: 6.2.4 Firmware for Original Prusa XL

Indeed, how are we supposed to know which fans we have? I ordered my XL in november 2024. I think Prusa should provide more information on that topic.

Posted : 18/04/2025 7:04 am
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