SCE Function Related Codes:

Code:
#Can't Exit Game
;TheEliteOne aka -LeetGamer-
;Exit using the home button, then open your cheat device to return to the game.
;Once you do this you can not turn off your psp.
0x00492B78 0x00000000

#Exit Game Joker
;TheEliteOne aka -LeetGamer-
;Press Left to exit the game.
0x00339D78 0x0A2A21AC
0x002886B0 0x3C0808d4
0x002886B4 0x850842B0
0x002886B8 0x34090080
0x002886BC 0x15280003
0x002886C4 0x0E324Add
0x002886CC 0x03E00008
Canceled Functions:

Code:
#No Fall Damage
;TheEliteOne
;This is the actuall fall damage function.
0x00100C84 0x03E00008

#No Recoil
;TheEliteOne
;This is the actuall recoil function.
0x0015D458 0x03E00008
Other:

Code:
#Amount of Recoil
;TheEliteOne
;This is the amount of recoil
;Default value: 0x3C063F80
0x0015D45C 0x3C060000 ;Edit the last four numbers