Prometheus-4 for Custom Firmware 5.03 and 5.50 now available .
Dec 3, 2010 . Listed in: PSP Tags: Custom Firmware, custom firmware 5.03 gen-c, custom firmware 5.50 gen-d3, liquidzigong, . When they have you by the balls you're scared and not trash talking about them. . (shakes head) . I bought a psp slim 3001 with firmware 5.5 and I have donwloaded several games including.