Have you "BRICKED" your PSP easily done not its easier to repair,
This will work on ANY PSP fat or slim working or not.
Simply put in MEM card and BATTERY and push "X" twice.
I have 4 kits 2 Original Sony Bateries 2 SLIM Service Tool batteries
All come with memory card with auto install M33 3.90-4 nd a CD with M33 4.01-2 on
Complete instructions given.
Repair or Downgrade ANY PSP with ANT firmware.
Recorded deliery included.