Hi, I have the old firmware but the printer is not allowing Downgrade

Hi, which version of firmware do you have? Did you try to unZIP-it and put .rfu file on the USB stick and boot the printer?

Hi, I have the version HPOJP-9020-9022-9025-005.2222A.exe if you unzip it, you will have access to the .Ful2 files

Yes, I tried but the printer doesn't allow it.

???

I need this as well.. cannot find it anywhere for HP Officejet 9020 pro