About switching OFW and CFWs (I will add it one day to the guide):
From my observations, if OFW is below 3.55, then no CFW I know can be installed directly over it. The same with downgrading (with QA flag of course), none CFW can going lower than 3.55 just like that. For some reason OFW 3.55 (or any CFW 3.55) is the checkpoint here. And things getting even weirder if You in the past used 3.55 Rogero Downgrader or 3.55 Rebug 999 Downgrader. So:
- If You want to install fw lower than 3.55, and You have already fw above 3.55, then install any 3.55 first.
- If You want to install fw newer than 3.55, and You have version below 3.55, then install any 3.55 first.
Another contraption is that some CFWs cannot be installed over another, again, even with QA flag enabled. No matter if from so called recovery or XMB, no matter if from USB or HDD (debug updates). And of course I don't talking about situation when we have CEX IDPS and trying install DEX fw or vice versa. I'm talking about normal situation with CEX over CEX.
I.e I was unable to install 4.90 Evilnat CEX over OFW 3.55, I getting 8002F2C5, from both XMB and recovery. But I was able to install Rebug 4.84.2 Rex and after that, update to Evilnat was successful. Both: HDD and USB pendrive don't have bad blocks.
Any ideas why this happening? In theory we should be able to install any CEX fw on any CEX console, especially newer on older.
@Evilnat @bguerville