How do I upgrade my firmware from 3.52 m33-4?

I have tried to use several updates but they dont work.
Any help will be greatly appreciated.

Also, if I create a pandora battery is it possible to change it back to a regular battery?

Anyone?

you have 3.52 m33-4 installed now?

Then download the M33 update and I believe you also need the OFW of the same version in the root of the memory stick as well. then execute the update with the PSP. Follow directions on the screen and you should be done.

All else fails look in the tutorial section and follow instructions there.

Thx for the response however I cant find the update... can someone point me in the right direct? Link anyone?
I would appreciate it!

[brentbizzle]

Go to www.psp-hacks.com. Then go to PSP downloads. You will find custom firmware and official firmware downloads there. Sorry I can provide direct links. Work has a web filter. Just check the readme's for the M33 update and you should be golden.