I've busted out my old PSP after finding it after moving. It's running 3.71 M33-4 which is running some games but not all.

What is the best thing to use to upgrade? I know I'm being lazy, just need a name so I can crack on.

My 6 year old said the Psp is rubbish and prefers his ipod touch after I said you have to press buttons to steer. I feel so old lol

Thanks in advance :D