If u hate pandoras, then use helicats recover flash, infact i just went back from gen to m33 and i used helicats recovery flash...
Instructions :
1. Download Helicats recovery flash (EBOOT.PBP)
2. Download official firmware 3.71 or 4.01 (which 1 u want)
3. Place EBOOT.PBP in PSP/GAME/RECOVERY
4. Rename originaal firmware to 371.PBP or 401.PBP. (if u want 3.71 rename to 371.PBP and if u want 4.01, rename to 401.PBP)
5. Start the recovery and ur done...
NOTICE: THESE INSTRUCTIONS ARE BY ME (Da Cool Man). Nor ME neither helicat are responsible for any damage..
If u follow My instructions u wont face any probs. Like I said I just did it.
p.s.
if u want 5.00 m33-6 then update after the recovery...
The ABOVE IS EXACTLY AS I DID, AND I AM CURRENTLY HAVING NO PROBLEMS..
easy way, and no need for the pandora...
AND OF COURSE NO SPAM