Hi im Paul located in UK would appreciate some help. Just picked up a second hand PsP 2003 model running Version 2.80 firmware. I am looking to install custom firmware on it to run emulators for the megadrive and mame etc as well as iso roms for psp games. Not really sure where to start do i update the offical firmware to latest firmware. Could someone provide details on my next steps to install custom firmware on the device.

Thanking you in advance.