CFS firmware level and process for K2 Plus firmware downgrade to previous version?

Flagship K Series Creality Flagship K2 Plus & CFS
1

I installed K2 Plus v1.1.2.6 firmware without my CFS connected, and my CFS firmware is at v1.1.3.

CFS will only retract filament from slot 1A, and will not pull in any filament from the other slots. The K2 Plus system thought that there was filament from the CFS at the extruder, but it was from the spool holder. Powered down, disconnected the CFS, powered back up and retracted the filament from the spool holder.

What is the latest CFS firmware version? I have searched and have not found separate CFS firmware.

I have tried downgrading to K2 Plus v1.1.1.17 using the USB and it will not initiate a downgrade. Tried the K1 method in root, SSH, and command line but also doesn’t work.

Hoped to downgrade and then update to v1.1.2.6 with the CFS connected in case the CFS firmware needs updating.

2

Just rename the old firmware to a version higher than the one the printer has.
That should initiate the installation from the usb, even if it’s a downgrade

1 Like
3

Thanks. That works.

Looks like the latest CFS firmware is v1.1.3, and that my problem may be a filament sensor in the CFS.