Homebrew PSP developer may have defeated v. 2.0 safeguard
Indianapolis (IN) - A video posted to a popular homebrew PlayStation Portable developers site appears to show the successful loading of a homemade game - reportedly a version of Tic-Tac-Toe - on a PSP model clearly loaded with the new version 2.0 of its system firmware.
The new firmware had specifically been designed by Sony to thwart anyone's attempts to load non-sanctioned games or applications, mostly to deter individuals from running or trading illicitly-obtained copies of games. While the game itself reportedly does not run yet (which could presumably still be considered a "hurdle" for anyone wishing to run his own games), the video does demonstrate what its anonymous author claims to be a key technique to getting a homebrew program image to load into PSP memory from a memory stick: It successfully passes itself off as a "version 2.1" upgrade to the version 2.0 firmware.
The video verifies the newness of the system firmware by showing the PSP connected via network cable to the Internet, running the new built-in Web browser--a feature new to version 2.0--and downloading the Google home page. It then shows the same system appearing to contain memory image loaders created for version 1.52, before demonstrating the technique that appears to load the homebrew program. The program was apparently not a copy of a commercial game, but a program created using homebrew developers' kits, for use on older versions of PSP. The system signaled a successful load with its trademark "ding."
Homebrew developers have told Tom's Hardware Guide that, although their work may not be sanctioned by Sony or any of its partners, their intentions are often not to encourage or support illegal or illicit use of the PSP mechanism, but instead to simply exploit its underlying versatility as a development platform. However, it remains possible that even the work of benign homebrew developers could be exploited by others--in this case, to run images of games that were successfully copied to memory sticks using firmware versions 1.52 and earlier.
Source : Toms Hardware