Pandora Battery - Unbrick & Downgrade any PSP!

[zabuza_101]

i have 2 psps 1 is downgraded and the other is 3.50 so i decided to downgrade it.after completeing the whole pandoras battery thing i decided to try it out on my psp
and i am now at 1.5 or half 1.5 as others like to call it.Some say you cannot upgrade to any other firmwires but i have using the psp upgrader/downgrader made by Bob Joe.First i upgraded to 2.80 then back to 1.5 and finally 3.52 M33 i just thought i should post for others to know take it or leave it

[PSP-1412]

you have to run them threw cmd just type in the path such as C:\Users\user\Desktop\msinst.exe j

type your drive letter where the j is i used it as an example also just right click the file to find correct location inside the properties

[xg917]

i have 2 psps 1 is downgraded and the other is 3.50 so i decided to downgrade it.after completeing the whole pandoras battery thing i decided to try it out on my psp
and i am now at 1.5 or half 1.5 as others like to call it.Some say you cannot upgrade to any other firmwires but i have using the psp upgrader/downgrader made by Bob Joe.First i upgraded to 2.80 then back to 1.5 and finally 3.52 M33 i just thought i should post for others to know take it or leave it

yea umm. its not half 1.50. its full 1.50, idk where people are getting that idea from, you didnt need to update then downgrade again. i went straight to OE at 1.50

[jerrt]

yea umm. its not half 1.50. its full 1.50, idk where people are getting that idea from, you didnt need to update then downgrade again. i went straight to OE at 1.50

yeah, they aren't very clear on this fact. but what would be the point if you couldn't upgrade? i mean the unbricking part would be good, but a half usable psp isn't much better than a bricked psp. that is my logic anyways, so i'm sure you can just upgrade.

[GrizzlY_lbc]

Question sorry if this has been said before many times. but can i use this to downgrade from a 3.50 firmware psp to 1.5

[masamune]

For those of you on vista still having trouble as I was, you need to run the command prompt as an administrator (right-click, then click run as administrator)

Note: do not click the msinst.exe right-click the a shortcut to the command prompt and run as admin... once opened cd over to where ever you have the msinst.exe (more than likely the desktop) and then execute

It took me forever to figure that out... I noticed I still got the error even when the psp was disconnected, then realized that vista wasn't allowing me to access the psp though command prompt... I hope helps someone, lol

-=Double Post=-

Question sorry if this has been said before many times. but can i use this to downgrade from a 3.50 firmware psp to 1.5

Some people said that they had, not really sure... but I don't see why it wouldn't work, it has a downgrade to 1.5 option when you get the menu working

[GrizzlY_lbc]

Thak you man im just goin to do it i got 4 psp's why not..

[masamune]

In fact people say they used it to downgrade 3.52 psp's, it doesn't need to be a brick you use this... but its more amazing that way

[cptwaggawagga]

yess.. this works out great cuz im getting a psp for 50 bucks.. and now i can fix my bricked one

great job

[blaz3d]

yea umm. its not half 1.50. its full 1.50, idk where people are getting that idea from, you didnt need to update then downgrade again. i went straight to OE at 1.50

if you read the readme its says:

NOTES AND RESTRICTIONS
- The firmware in the Memory Stick is not a full 1.50, but a minimal
subset. Therefore, not all applications (such as flashers, or
recovery apps) will load.

so some flashers may not work, but whats the harm in trying?!?! you can just unbrick again lol!

peace