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You get an update message when you try to buy or download apps using Windows Phone Marketplace
Explains infrastructure upgrades to Windows Phone Marketplace, why they are necessary, and how they will affect current Windows Phone customers.
Phone updates FAQ | Windows Phone How-to (United States)
Get answers to Windows Phone Updates FAQs and learn how to maximize your phone's performance.
Windows Phone 7 update central | Windows Phone 7 | Windows Phone How-to | Windows Phone (United States)
Install updates for Windows Phone 7 to get the latest features and improvements.
Welcome to Software Update
Can't update or sync Windows Phone 7 using Windows RT
Explains why you can't update or sync your Windows Phone 7 using your Windows RT computer and provides alternate ways to sync content.