i have a psp2004 recently upgraded it to the 5.50 and put prometheus 4 on top(some games not working) so i tried to put cwcheats on but to no avail but thought if i upgraded it tothe latest firmware it might solve it but when i tried using 6.35 pro-b2 ofw it says my system version 9.90 so i am at wondering is there a way of getting round this.cheers craig.