Here's how to edit iRShell to work with CFW 5.02 GEN-A.

Minimum requirements:

-Having already installed the Custom Firmware 5.02GEN-A
-A hex editor >>http://www.pspgen.com/divers/telecharger-184734.html<<
-Having already installed IRSHELL 4.8

Procedure to follow if you want to patch your iRShell yourself:

1.Connect the PSP with the USB cable
2.The switch to USB if it does not happen automatically.
3.Launch hex editor

Note:
It will be necessary to modify the following files with the hex editor. They are all in MS0: / IRSHELL / BIN /

-irshell500.prx: Change 00 in 02 at 0x2869
-irshell500s.prx: Change 00 in 02 at 0x28F5
-irspops_500.prx : Change 00 in 02 at 0x0BB9
-nethostfs_500m.prx :Change 00 in 02 at 0x1E75
-nethostfs_500sm.prx : Change 00 in 02 at 0x1E75

Once done, you have a IRShell which starts on our Custom Firmware 5.02GEN.