Originally posted by Tw1sT
Can you downgrade OFW back to 3.55 firmware? I am on OFW 4.78 and I used an e3 flasher. I checked my dumps and they were good, my lowest downgrade is to 2.70 firmware, I flashed the ps3 but when I go to downgrade it says "data corrupted". I know its meant for CFW but if I jailbreak 4.78, would I be able to downgrade to 3.55?
If you are on CEX CFW & what to go back to OFW 3.55 do the following steps.
Important:
Before you start disable any spoofers if you have any installed & remove any game disc from BD drive, use right usb port for installs.
(1) Install 3.55 Rogero Downgrader RSOD.
(2) Install Toggle qa package & run it, PS3 will beep & reboot,then do the button combo to QA flag PS3.
(3) Install Rogero 3.55v3.7 CFW (Must be installed from recovery menu) option 6 system update.
(4) Install OFW 3.55 (Must be installed from recovery menu).