The following cheats have been successfully applied to my PSP.
FREEPLAY: –
XOLTEN – BIG
LOVE MACHINE – HOT
T’EED OFF – PGA
PLAYBOY – HEF
STRIKE’S 'N’ SPARES – PBA
ACES HIGH – UNO
CENTRAL PARK – NYC
GOIN’ NUTS – PHF
BLACK HOLE – LIS
PAYOUT MODE – WGR
CUSTOM BALL – CKF
OPTIONAL TILT – BZZ
Yours,
R. Patterson