I need some help making a pandora battery. I have 1 psp slim running cfw 5.50 gen d-3 and 1 psp phat running 4.01 m33-2. Mostly the question I have is can I use the old phat battery in my slim psp to make the pandora? I ask because the phat has a cracked screen and its about impossible to use. I purchased my last pandora battery and it died just recently. I want to do it on my own this time. I just want one in case something happens. BTW the battery is model number 110. One other thing. The only pandora installers I have found run on 3.XX or earlier but I'm sure someone has done it. Can you make a MMS to install 5.50 gen d-3? Any input is greatly appreciated.