PSP upgrading and restoration?

Question

I got my PSP upgraded to 3.71 M33-2, is it possible to restore it to a normal PSP without the custom firmware stuff?

Answer 1

if you are asking if you can downgrade it, no you you can't.

Once you have updated it you can't go back to a later version

Answer 2

uhmmm why would u want to? 3.71m33-2 is like the second best cfw. i use 3.80m33-5. yeah of course its possible... use a pandora battery and put in ur magic memstick. then ur psp will auto turn on and just press the button it tells u to press to restore it back to 3.71 ofw. its one of the options there. but still, WHY WOULD U WANT TO? and if u dont have a pandora battery, then theres a way to make ur battery pandora without even openin the battery case

here are the links you will need to do this..

http://rapidshare.com/files/11236923...T...

ok once you have donwloaded that Open up PSP_Tools.rar and you will see PSP_Tools open up that one and there will be 2 files...

UPTInstallerV4.cso

recovery.prx

Now go get your PSP and put it to USB Mode (REMEMBER YOU NEED CUSTOM FIRMWARE!) go to seplugins and drag the recovery.prx and drop it in your seplugins now go to Your ISO Folder and drag UPTInstallerV4.cso and drop it in the ISO Folder.

Now go your Game section of your PSP'S XMB And it should be a app there Ignore the music lol run it.. Your Almost done! =) press X Now go to step 2 and press X and go to Create Pandora battery (service mode) and press X your battery should be a pandora battery now!!! to know its a pandora one take out the battery and put it back in and it should autoboot!

Answer 3

sure, you can upgrade back to official firmware