Thank you for quick testing. This concluded that the resume problem is no regression of the recent firmware files, at least. Also, could you tell which firmware version did boot properly? I suppose 20.40 caused the same problem? BTW, if you get stuck at boot due to the graphics problem, you can boot once with "nomodeset" boot option, and fix/revert things. The option will disable the native DRM driver. For reverting the manual firmware override, simply remove files/directories /lib/firmware/update/* and rebuild initrd (call mkinitrd).