Now we are coming to the trickiest part of this process.
You must to check the Update through Zune (Settings – Update), but after that you must to disconnect your computer from the internet after 2-3 seconds.
First of all you need to turn off the Wi Fi (Settings – Off) on your mobile phone.
It creates lock screens for you with your name and contact number on them to aid in finding your phone the old fashioned way when you lose it.
No need for a GPS, just tell folks you have a small reward and give them a number to call.
You can download it free now as folks will not pay 99 cents for anything except Angry Birds. ;) Anyway, it works great on Windows Phone 7 and Windows Phone 7.5 (Mango.) Recently I got a Nokia Lumia 920 with Windows Phone 8 and since there's a number of new APIs and features I could exploit - not the least of which being the ability to programmatically set the phone's Lock Screen without the user needing to do anything - I figured it was time to update it.
I encourage you to review the post From Concept to Code in 6 hours: Shipping my first Windows Phone App as a reminder of what the app did and the issues I had writing the Windows Phone 7.x version.
This is not the fixed time, so you’ll probably need to find your own number of the seconds (in my case it was 9 seconds).
The main goal of this step is to get the message: “An update is available for your phone.” and the “Update” button bellow this message.
I checked if this upgrade is available for my Nokia Lumia 900 and every day I got the same message: “Your phone is up to date.” After three weeks I decided to research if there is an alternative solution for my issue and I found a couple of possible solutions.
Here I’ll describe the most user-friendliest solution which solved my issue.
If you receive Windows Update error 80072efe or 80072f76 while checking for updates, it might be caused by a connection interruption between your computer and the Windows Update servers. If you still receive this error after checking your Internet connection, it might mean that a program running on your computer is preventing Windows Update Services from accessing the Internet.
Programs that might do this include firewalls, antispyware software, web accelerators, Internet security or antivirus programs, or proxy servers.
If you receive the massage that your phone is up to date, you didn’t disconnect your internet connection quickly enough and you need to repeat this step.