Video of the PSP 5.03 hack
Is about to be released the definitive hack for the PSP-2000 and PSP-3000 series
Just a few weeks ago, it has been found another bug in the TIFF library that allowed to unsigned code to be run.
If you have a PSP-1000 or a PSP-2000 series you can try it, with any firmware version (even unmodified ones), up to 5.03.
Downlod the file from qj.net, and, if you have a PSP-1000, copy phat.tiff in the photo folder; if you have a PSP-2000, copy slim.tiff. (don't copy both). Then, copy h.bin in the memory stick root, and go to open the image from the XMB
Until now, it was just a "proof of concept"... but the Team Typhoon is about to release an HEN (Homebrew ENabler) for ANY PSP version, PSP-3000 included. In their video, they are showing that is possible to edit the MAC address of the PSP, a permanent edit that requires kernel access.
Here is the video!