voila ce que j'ai lu pour avoir la modification pour ne pas avoir a avoir un faux iso :
hi guys.i tried this trick and it working.
ok.
1. install devhook 0.45/0.44
2. install harleygs costum firmware
3. install riedge dh mod
http://forums.maxconsole.net/showthread.php?t=25040
ok. copy eboot.pbp from this mod and copy to ms0:/psp/system
- to make it simple copy and rename it to devboot.pbp
change harleygs config txt to autoboot this eboot
devhook = "ms0:/PSP/SYSTEM/DEVBOOT.PBP";
ok.now u are ready.
-ok 1st run devhook and set to autoload and automount=disable
-if u switch on psp without pressing any button. u will load to firmware 2.71 right. no error.no fake iso needed.
-so if u want to change devhook setting.switch on psp while holding triangle. u will jump to devhook menu.press start and u will load to firmware 2.71.. cool huh