What happened?
While flashing firmware to your Original Prusa Printer an error might occur, and the screen will display the following message: "File system error! Try a different USB drive or format the drive with FAT32 filesystem (all data will be lost)".
Error name: File system error
Error code: #26613 (MK4S) #13613 (MK4) #27613 (MK3.9S) #21613 (MK3.9) #28613 (MK3.5S) #23613 (MK3.5) #31613 (CORE One)
The printer shows this error when it can't read the USB drive.
How to fix it?
Connect the USB drive to your computer and format it in FAT32. After formatting the USB drive, try flashing the firmware again.
Are you still having issues? Contact our support team and let them know that you tried to fix the issue with these instructions. We will take it from there.