firmware 6.5.3 causes connection problems and corrupted files
 
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Philippe BAUER
(@philippe-bauer)
Eminent Member
firmware 6.5.3 causes connection problems and corrupted files

This is becoming a habit; yet another firmware update causing serious problems by corrupting files sent via Prusa Connect from Prusa Slicer. The regression continues, and the machine suffers from frequent stops mid-print, the print head jammed on the bed with a horrible, frantic noise from the stepper motor. I've had enough!

Posted : 11/04/2026 9:05 pm
hyiger
(@hyiger)
Famed Member
RE: firmware 6.5.3 causes connection problems and corrupted files

 

Posted by: @philippe-bauer

This is becoming a habit; yet another firmware update causing serious problems by corrupting files sent via Prusa Connect from Prusa Slicer. The regression continues, and the machine suffers from frequent stops mid-print, the print head jammed on the bed with a horrible, frantic noise from the stepper motor. I've had enough!

I've had one case where a large g-code file sent via PrusaConnect caused the print to stop with a g-code corruption error. I've haven't seen it since though. I swapped out the USB drive thinking maybe it was there. Not sure it is related or just a coincidence. 

My advice is to raise a bug issue here: https://github.com/prusa3d/Prusa-Firmware-Buddy/issues

Posted : 11/04/2026 9:16 pm
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