FW in internal flash corrupted #17608 (XL)

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What happened?

When trying to flash the firmware on your Original Prusa XL, the printer shows the error: "Firmware in the internal flash corrupted! Please reflash the firmware."

Error name: FW in internal flash corrupted

Error code: #17608

This error is shown when the firmware file in the USB drive is damaged, causing the firmware flashing procedure to fail. 

How to fix it?

Download the firmware and if necessary the bootloader, and transfer it to your USB drive. Make sure to unmount the drive from your operating system before physically removing it.

Insert the USB drive back into the printer and reboot the printer using the reset button directly next to the knob to initiate the flashing procedure. In case the procedure does not start, reboot the printer again by pressing the same reset button, and while the printer is booting up, press once the rotating knob.

If the issue persists, the problem might be in the USB flash drive. Find any other USB drive in your household, make sure it is formatted to FAT32, copy both firmware files, and repeat the previously described procedure.