Hi Guys

I need help in upgrading to the latest cfw from 3.52 m33-4. i have not used my psp in years and is now lost in process. not sure what is going on with different threads. i dont have no pandora battery or mms. Please help me get to the latest cfm so that i could play latest backup iso of memory stick. i currently have the psp 1000.

Many thanks in advance