By copying the .PSP file to the memory stick of a PSP, the device can run the code following a reboot. The hacks only work with the v1.00 firmware that shipped with original Japanese PSPs.

The cracked PSP will then be able to play content not endorsed by Sony (although there isn’t that much around at the moment). Sony, of course, welcomed the move with open arms, calling it a necessary ...

Hackers crack and kill the PSP Didn't take them long... Written by Will Sturgeon, Contributor Oct. 6, 2005, 10:40 a.m. PT ...

Will Sony Crack Down on PSP Hacks? If the company’s history is any indication, the answer is yes. But doing so would be a mistake, again. Here’s why.