Similiar thing with the XBox they used a scope of sorts to capture the key directly off the bus. On the PSP best case you capture the public key which can only decrypt the code signed by the private key. Even if you could directly inject unsigned code on the bus and get it to execute I'm not sure what good that would do for the average PSP users who doesn't have that equipment.Originally Posted by BaDDoG
You're right though with the hassle of soldering a chip on the board, just replace the entire board with an older firmware on it. Install a hidden camera in your PSP with a satelite uplink, then intentionally brick the PSP and return it to Sony for repair. See if they just replace the main board or if they have a hardware interface that plugs into the serial port and forces a flash on it.