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Microsoft Surface Duo July 2021 Android security update is now available

Surface Duo 2020
Surface Duo 2020 (Image credit: Daniel Rubino / Windows Central)

What you need to know

  • Microsoft is rolling out the July OS update for Surface Duo.
  • The update brings the OS security patch to July 5.
  • The changelong notes that this is only a security update with no new fixes.

Updated 4PM ET: Added changelog.

Another month and another delivered update for the Microsoft Surface Duo is available for unlocked and AT&T devices. The update brings the July 5 Android Security update and presumably other fixes and optimizations to the dual-screen phone.

Microsoft has updated the changelog (opens in new tab), and it notes that the only change is a security update with no other fixes or optimizations:

  • Addresses scenarios outlined in the Android Security Bulletin - July 2021.

The update bumps the Surface Duo OS version number from 2021.525.6x to 2021.622.xx and seems to be small and minor due to the 20 MB file size.

For those looking for Android 11, unfortunately, we heard that update wouldn't be until a bit later, possibly around the October timeframe.

To grab the update yourself, use these steps:

  1. Connect to a Wi-Fi network.
  2. Select Settings on your Surface Duo's home screen.
  3. Select System.
  4. Select System Update.
  5. Select Check for update.
  6. Select Restart now.

The update is rolling out now for all models of the Surface Duo. What are your thoughts on Surface Duo's monthly OS updates? Let us know in the comments.

Thanks for the tip, @VincibleAndy!

Daniel Rubino
Daniel Rubino

Daniel Rubino is the Executive Editor of Windows Central, head reviewer, podcast co-host, and analyst. He has been covering Microsoft here since 2007, back when this site was called WMExperts (and later Windows Phone Central). His interests include Windows, Microsoft Surface, laptops, next-gen computing, and arguing with people on the internet.

8 Comments
  • So, I am on ATT and just got a system update. No information or size. Build is 2021.622.32
    Curious to know if all devices get the update at the same time now or if it's without the security update that I will receive 10 days for now...
  • Oh, interesting. Could be just a security update then. It seemed small.
  • I have an at&t duo and appear to be getting a system update now also. strange
  • I got the update on my Duo (ATT) as well. very quick and small. I am assuming its just a security update,
  • Same. Security update is installing on my AT&T build.
  • So still not fix for Book posture screen blanking... come on guys, you put the bug in with the April update and haven't fixed it yet. Even with a complete factory reset and update and it is still there.
  • It's clear they're not putting much effort into addressing this device's shortcomings.
  • Hoping they are focusing on android 11 and that will fix many of the issues.