QUOTE(sabbath_dude @ Oct 28 2007, 11:52 AM)
To find out what firmware your PSP is currently running go to Settings->System Settings->System Information->System Software->This will display the current firmware version and in your case its 3.60. You're going to need to use the Pandora's battery method to downgrade your PSP. From what I've been reading it seems you no longer need another hacked PSP to make one. Just solder bridge a connection on the battery circuit board and you're half way there.
The main difference between the fat and slim PSP is pretty obvious. Other than that the slim has improved features like tv out, better battery life, better button layout + it no longer has the IR sensor. From a software point of view the fat PSP is still the best for homebrew.
Cheers - so I just need the Pandora's battery hack. I've found this
website - does anyone know how this works because I don't want to be screwing around with a PSP battery, plus I don't have a fat PSP to hand in order to try it