Windows Phone 7 Genuine software checker caused problems for custom ROMs
Former hacker advised Windows Phone 7 devices ship with a Genuine Software checker that displays an access screen to the Xbox Live Marketplace, Windows Live, and Zune from a smartphone device running a OS version that does not match up with your hardware key. And while there have been reports of people porting over Windows Phone 7 to the HTC HD2 and other people being able to make ROMs for the new smartphone OS, there appears to be another hurdle that could be very difficult to overcome.
Modding Microsoft Windows Phone 7? There's a problem!