I've found that we can unbrick our PSP if you use the " [GUIDE] Change your XMB Icons" (exemple) and unfortunerly you brick your PSP.
0. Use the method Cintro that i found in forum:
-create a fodler called "BOOT" inside PSP/GAME
-then put all the cintro files in there.
-make a fodler called "CINTRO" inside PSP/SYSTEM and put your .PMF file in there.
-go into recovery/confirugation settings and enable booting from PSP/GAME/BOOT/EBOOT
1. You must make a back up of the RCO you want to change by PSPFILER 2.2 and place it in your ms0.
2. You change your (exemple) topmenu_plugin.RCO like you want and you replaced the RCO in your PSP with the new one.
3. If your PSP brick then
-restart your PSP and go to Recovery Mode
-use USB toogle
-go to PSP/Game/BOOT and delete all the file in BOOT.
-go to PSP/GAME/filer and copy all the file here in folder BOOT
-disconnect your PSP from PC and exit the Recovery Mode
-now your PSP will start in PSPFiler, just copy the original RCO in its place and quit PSPFILER.
YES, you've unbricked your PSP.:Jump: