Did anyone get over level 20 !?!?! Crash 5 !!

[EiznuV]

Didn't seem that difficult =-)
But when i arrived to meet the boss of level 20+ in Crash Bandicoot - the Wrath of Cortex - (5)
It didn't go as i acspected to, the Game froze up on me !
And no matter what i have tried , it FROZE on the same spot. ( so simple me is thinking , ah ! a copy protection !? , or just burned to fast !)
So did burn it again on 2 and 1 SPEED =-)
But stil no result !! Have read all on here and did find nothing !!
SO WHO CAN HELP ME !!! ( maybe with a working iso ? )

have a ps2(30004) chipped with a Neo 2.2/Ar2
The Game is cracked by Kalisto