Downgrade 3.71M33 to 1.50 without pandora

[wraggster]

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

Curious very Curious, Download and Give Feedback Via Comments

[Sonicboy 101]

Nice!

[pt9087]

Awsome! :thumbup:

[CaptainMorgan4]

Hey I'm currently bricked on 3.71 M33 and only can access the recovery menu, could I launch this from recovery and go back to 1.5?

[Anonymous D]

in theory yes to the above, but itd have to be put in the folder as sepcified by the recovery i forget whart thst is now.

[CaptainMorgan4]

So what your saying is if I rename this folder to "Recovery" and throw it in the GAME folder and put the 1.5 firmware in it and name it to UPDATE and then run the recovery from thing from the recovery menu it will work? Can someone here that knows for sure if it will work please tell me because I really don't want to go through the whole Pandora thing if this is a solution. I hate being BRICKED I want my PSP back!

[Nikolaos]

Who would want to downgrade from 3.71 M33

[CaptainMorgan4]

People like me who bricked, and you know maybe a couple RARE people who like 1.5 kernal.

[240-185]

Me.

I used to launch some homebrews which don't work in 3.71M33. Most of them are emulators... Also PimpStreamer and IRShell.

Not the most important, eh?

[jak66]

People like me who bricked, and you know maybe a couple RARE people who like 1.5 kernal.

i think what you need to do is as above, then copy (not move) the eboot to the RECOVERY folder inside GAME