Unless you have the Dell Venue Pro (in which case your only option is to remain patient), you can force the update to take place if it simply hasn't been pushed out to your phone. To do this, just check for an update in the Zune software while your phone is tethered to your computer. If no update is found, then check for an update again and immediately disconnect your PC from the Internet by either turning off the WiFi switch or pulling the Ethernet cable. The update check should hang for 20-30 seconds, but should find an update this time. Reconnect your computer to the Internet, then do the update.