I'll detail all the steps I took in as much detail as possible.
Uninstalled 6.20 PRO-B7 permanent patch
Uninstalled 6.20 PRO-B7 CFW
Updated to 6.60 OFW
Placed all 6.60 PRO-C(fix3) files in appropriate place
Tried to run 6.60 PRO Update
At this point, the normal PSP logo comes up, fades, and...