Computer hackers have scored a victory in their battle against Sony and the way the company controls its PlayStation Portable (PSP) handheld games console.
Sony sells its PSP with built-in software, known as firmware, which controls how the console operates.
The firmware locks many of the PSP's capabilities, preventing enthusiasts from writing their own programs, known as homebrew, and running them on the machine.
It also disables its ability to play some films which are not bought on special Sony PSP disks.
But last month three hacker teams - Noobz, Team C+D, and a group led by PSP hacker Dark Alex - co-ordinating their efforts over the internet, found a flaw in the most recently released version of the firmware - version 3.03.
Using this flaw they devised a way to unlock all PSPs, regardless of their age or the firmware running on it.