After updating the CFS-C firmware, unable to directly revert to the machine's original firmware
Format a USB drive, download the following files and place them on the USB drive.
Insert USB drive into the machine, and check to confirm the update.
(About the firmware downloads, please contact cs@creality.com)
After the update is complete, ignore any error codes that appear, simply restart the machine. The update is successful when the machine begins self-check.
If error codes appear after the update, it is recommended to skip the machine self-check. After entering the home page, click on settings and manually control the machine to perform self-check. Refer to Wiki Page: K1 Skip Startup Self-Check Process