Can't install cfw after teensy nor patch.

I have a 2001a system with a mis matched disc drive. I can't even install ofw, as I get the error code for bad drive.

I installed a teensy and used Norway to patch down to 3.55 but when I boot it's asking me for a 4.90 firmware for some reason.

I've tried 4.90 noBD evilnat but it says the file is corrupt. Any advice? Should it be asking me for 4.90 after I write a patched nor?

Is there any way I can boot cfw without the drive, so I can remarry the drive I do have?