How did you get it to download it keeps saying the file is corrupt and will the cfs work still afterwards
I’m assuming you’re talking about updating the firmware from a USB stick? I had problems there until I formatted the stick correctly. I think they say format in FAT32 or exFAT? Then I just stuck it in the side of the machine and rebooted. It did all the work for me from there.
Yes the CFS will work properly again. Download it to a USB like Justin said FAT32 or ExFAT & it should be fine. Maybe do a scan of your USB stick. Once you put it in the machine it is pretty self explanatory. Just turn off automatic updates.
it is installed automatically
I was experiencing this exact same issue on 1.1.0.94 and had to stay on 1.1.0.66. Followed your steps to downgrade however I just came across this reddit post: K2 PRO firmware 1.1.0.94 issues : r/Creality_k2 where they said Creality Support told them:
UPDATE: Contacted support and they quickly got back to me with a solution. I connected to the printer via the browser using the IP and port 4408.
I then went into config, opened and edited printer_params.cfg.
The fix is to change
variable_nozzle_temp: 300 to 320
The K2 Pro firmware expects the nozzle to be capable of reaching 320°C.
with the max set to only 300°C, it thinks the hotend is damaged or improperly configured and refuses to print.
This was the ultimate fix for me for firmware 1.1.0.94
Just wanted to share.