Following in the footsteps of the now dead ChevronWP7 jailbreak tool, Windows Phone developer Julien Schapman is planning to release a more robust unlock tool called WP Device Manager , according to WinRumors.
“My unlock method is similar to that of ChevronWP7 in the way they both use a fake registration server, but my method is different and more reliable,” wrote Schapman in an email to WinRumors. “For example it automatically detects when a WP7 is plugged in and will check if this is a registered developer phone, if not it will register it once and for all, so the device will never re-lock like with ChevronWP7.”
The problem with unlock tools such as ChevronWP7 and WP Device Manager is that not only do they allow users to install their own "homebrew" code onto handsets (a good thing), but it also allows pirated Windows Phone 7 software to be installed on handsets (which is not so good). Schapman says that as soon as Microsoft offers an official way for developers to load their code onto WP7 handsets he will remove the unlock mechanism from the tool.
The tool also allows users to manage their applications, explore devices, create device backups, add ring-tones and sync favorites.