3.93 Unofficial M33 Patch to Downgrade to 3.90M33

[Lwiggy]

Hiya i have the 3.93 M33 Unofficial Patch on my psp plus the second update, but today i tried to update/downgrade it to official 3.90M33-3 but when i get to the update part it says the firmware im trying to load is not correct for the firmware loaded!!!
Why is that people, HELP NEEDED PLEASE
also can this be solved using pandora? *(hope so):confused::confused:

[kjetil1991]

pandora works fine just downgrade to 1.5 and upgrade to sonys 3.90 ;)