Error 80020148

If you got Error 80020148 on your PSP when try to run iso or cso files then this may because of :

1. FAT on your PSP is broken. Mostly is lost chain problem. OR
2. The ISO/CSO file is a eboot ISO (ie: "Final Fantasy Tactics The War Of The Lions")

Troubleshoting for FAT Problem. See Lost Chain on PSP.

Troubleshoting for eboot ISO. (Custom Firmware only)
1. Open RECOVERY MENU. To open the recovery menu follow below procedure:
-Shutdown your PSP by move up the power button and hold on that position until your PSP is turn off. Then release your finger from the button.
-Turn on your PSP by move up the power at the same time press the R button.

2. Goto Advanced>Advanced configuration.
Enable "Execute BOOT.BIN in UMD/ISO"