I believe the debug units have a PUP that can be used to downgrade to lower FW. Maybe he might release it for current 3.21 users. Anyone out there can you please speculate on how he signed his CFW to run on retail and how he activated other os again? Was it just a matter of checking flags etc?
if you have full lv2 dump you can do whatever you want with ps3 sign checks will removed, bypassed, cracked,r eplaced in no time if he maked a cfw and says you can install it. this means he already have kernel mode exploit in lv2 at least 1 and throught it he can: create isoloader, inject in fw pirate copy loader and more very nice things.
i'm dying to get my hands on that CFW! i really don't need it right now but i think that when GT5 comes out it will require at least that firmware version, and for now it's the only game i really want so when i get it i'll probably need to update one way or another! Great work!!
Hmmm... maybe he only edit text? Change 3.15 to 3.21, and change MAC to ff:ff:ff:ff:ff. One week after new firmware relased, we/he have CFW... I think it's so simple.
I've had the same thought, but I'll reserve judgement for a while. I wonder how exactly PSN determines what firmware you have. Wouldn't it be ironic if simply changing the version string effectively makes it "3.21" as far as PSN is concerned? Geohotz would in some way be technically correct.