ALOT...u can get many different emulators such as snes or n64 etc. you can get custom themes like an Xbox 360 theme. you can download free games and other apps that allow you to burn games from a UMD to your mem card. also get several apps that r on iPod touch like icopter. you can also hack into psp games and use cheat codes and stuff. it basically makes ur PSP alot better and capable of doing many differ things.
No.
Firmware refers to the system software of a hardware device. Custom firmware takes the place of normal firmware, often adding functionality aspects to the system.
Right now there isn't. If you want to get custom firmware for psp version 6.20 you need to downgrade to custom firmware using a Pandora battery.
Not sure. Why not downgrade?
Die
Custom firmware is needed to do it, and if custom firmware is installed on the PSP in use, a plugin can be installed.
Custom Firmware is illegal<-----EDIT:Thats not what he was asking, please asnwer the question
New version comes out is the best version but i should be custom firmware because without custom firmware you can not play free games in PSP.
You don't, you get Official Firmware from the PSN.
Cause you need to make you PSP Go To the lowest firmware (kinda like downgrade) Then you can install you custom firmware
Recently you can not make your psp with a custom firmware with out Pandora, Think about buying a Pandora battery on eBay, they are cheap.
If you have official firmware you can only play demos If you have Custom firmware you can play all kinds of games So You Don't have custom firmware