Microsoft has rolled out yet another preview version of Windows 10 Mobile with Build 10549 to its fast ring insiders. Though before you upgrade, be aware that you have to go through an arduous process of going back to Windows Phone 8.1, as you cannot upgrade directly from Build 10536. To get the build, you need to downgrade to the old version using Windows Device Recovery Tool, and then install the Windows Insider app, choose the Fast ring and reboot your device to get the update.

While those you who’d rather prefer to stick with the Build 10536, Microsoft says ‘that’s fine too,’ as they are working on a solution to make sure that Insiders get ‘the next one’.

“We know having to go back to Windows Phone 8.1 to get this new build is a bit of work. By doing so you are also helping us test the upgrade path that millions of Windows Phone 8.1 customers will take to upgrade to Windows 10 Mobile, so we appreciate the adventurous Insiders who choose to go this route and give us feedback,” said Windows Insider chief Gabe Aul.

Hence, the Windows maker seems eager to get the valuable feedback it receives from insiders as millions of users will be upgrading to Windows 10 Mobile once the full rollout phase starts later this year.

Coming to the changes in Windows 10 Mobile Insider Preview Build 10549, it includes several tweaks to the Messaging app, new diverse emojis, along with Cortana support in new regions which include Australia, Canada, and Japan.

In the Messaging app, Microsoft has expanded the text box as in previous builds it was just limited to two or three lines, thereby making it hard to write longer messages. The issue has now been fixed in Windows 10 Mobile Insider Preview Build 10549. The new build also gets new diversity emojis featuring a collection skin tones representing different races.

Windows 10 Mobile Diverse Emojis

Meanwhile, if you’re interested in checking out the fixes and known issues with Build 10549.


  • The Windows Camera app no longer crashes when certain applications launch it to capture a picture.
  • Touch keyboard wouldn’t get dismissed now when you send a message, which makes sending 2+ texts in quick succession easier.
  • Fixed an issue where swiping away a notification was causing the notification icon to appear top of your screen.
  • Screenshots were not being properly saved resulting in many top social messenger apps such as WeChat, WhatsApp, LINE, WeiBo, and QQ unable to find saved screenshots.
  • Fixed an issue where you couldn’t launch apps saved on SD cards after reinserting your SD card.
  • Pinch to zoom works properly in the Maps app now.
  • Fixed an issue where trying to set a custom ring or text tone for a contact shows a black screen for 10 seconds, then does nothing.
  • Added back vibrate-only alarms.
  • Fixed call-blocking.

Known issues:

  • After the upgrade, you might be missing a few apps. If you experience this, the workaround is to reset your phone.
  • After rebooting your phone, you will not see notifications, such as new messages, until you unlock your phone for the first time. After that, you should see notifications for new messages just fine. This bug is fixed in a later build.
  • You will be unable to make calls with Skype for Business, WhatsApp, and other apps after upgrading to this.

While the company’s newly announced flagships the Lumia 950 and Lumia 950 XL will be the only smartphones that’ll come with Windows 10 Mobile out-of-the-box. Microsoft also announced on Facebook while responding to user queries that old Lumia devices will also be getting the Windows 10 Mobile update starting sometime in December.


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