Downgrade 3.71M33 to 1.50 without pandora

[gatosxxx]

hey man i need to downgrade my 4.05 :S from my psp fat what should i do pls help me

[artur-95bicz]

i have the 3.95 fw and i cant get to the recovery menu.and when i want to put the 4.01 cfw update it doesnt wor couse it saiz (the game could not be started) (8002148)and it does thesame on every homebrew

[artur-95bicz]

oh!!!!!!!!!i have a sim n lite

[artur-95bicz]

pleeeeaaaase help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!

[tyler074]

News/release from Samhain;694755:

This is how I've downgraded my FAT PSP with CF 3.71M33 to 1.50 Original FW:

* Copy the entire content of the attached file to PSP\GAME folder.
* Rename Original FW 1.50 file to UPDATE.PBP and copy it to PSP\GAME\UPDATE folder.
* In the Game menu launch "Update to X.Y.Z."
* Follow the onscreen instruction and it's done in a while.

I got a FAT PSP with motherboard prior to TA082. I've no responsibility if you damage your PSP with the above procedure.

Works on TA-079 and TA-082

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what am i supose to rename i dont see it and does this only work on psp slim