Everything that can go wrong with Windows Phone 7 update does:
Sounds simple. Except it doesn't actually work. The two Samsung handsets on the market—the Omnia 7 and possibly the Focus (which are, or were, my pick of the Windows Phone 7 crop, thanks to the way their AMOLED screens make the operating system look so delightful)—are both experiencing "difficulties" with installing the update. The updates are failing to install in two ways. For lucky individuals, the process merely hangs on step seven (out of ten); rebooting the phone resurrects it, albeit without the upgrade. For a minority of unlucky users, the process fails at step six, and corrupts the phone's firmware. What's worse is that for some of them it appears to be bricking the phone completely, rendering it useless.