In order to get the Mango update pushed to your Windows Phone 7 on the Samsung Focus (1.3), you will actually need to "pull" it.

Follow these steps to show the update in the Zune software:

  • Plug your Samsung Focus into your computer and wait for the Zune’s software to load up.
  • After the software loads, go to settings, and click on update. As soon as you do this, DISABLE your wireless connection on your laptop (or disconnect your cable). When you disable the internet access, it will notify you that there is a new update for your phone. At this point, re-enable your wireless connection or cable.

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  • The next screen will appear showing there is a Windows update available. Proceed with this update in it’s entirety.

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  • It will go through the entire update process. When it’s completed, it will tell you that your phone has been successfully updated.
  • Repeat the process of going to update and disabling your wireless connection again to force a new update. When you see that there is a new update, it will tell you that you will need to update your Zune software
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  • After Zune restarts, you will need to, yet again, follow the above procedure of “forcing” the update. It will then show you there is a new update, this time it’s labeled 7.0.7403.0

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  • Follow the upgrade installation again all the way through. After you complete one update, you will notice it will run an additional update, as needed.
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  • If you notice in the last screenshot, the version upgrade is marked as 7.10.7720.68, this is the Windows Mango update version.
  • Congrats! You’ve successfully installed the updated version of Windows Phone! Enjoy the Mango experience.

(note, this may not work everyone, but this is the steps I took to get my update working correctly when I wasn’t seeing an update come across)