firmware help needed help

[leerich2003]

Hi I am new to psp fermware emulation. My little boys psp is version 1.5 and I can't seem to get the devhook to emulate the firmware hi enough to play modern games could you please help the highest I can get it upto is 3.11 using devhook 0.52.please help as my boy loves playing the psp and needs to play newer.
Thanks in advance.:thumbup:

[pspmoddingelite]

u try custom firmware?