Microsoft has announced Windows 10 Mobile will be made available to Windows 8.1 phone as a software update only. This assumes significance in that the associated firmware updates that almost always accompanied a software update in the past for non-Lumia phones will be out of the picture from now onwards. And the obvious benefit of such a move is that things will be faster henceforth.

In the past, it took a considerable amount of time for manufacturers to prepare FW update that would accompany SW update released by Microsoft. The only consolation here is that those at the receiving end of the frustrating delay are very few in numbers though that does not make things any simpler for those in the lurch.

However, Microsoft warned it still is not be as straightforward as it might seem as some phones running Windows 8.1 could still require a firmware update before they can usher in Windows 10 on their devices. However, Microsoft is yet to confirm the list of devices that would be requiring firmware updates but has stated all Windows 8.1 phones should upgrade to the latest build in order to be ready for the jump to Windows 10.

Meanwhile, Microsoft has also released Windows 10 Mobile Build 10586.122 to Insiders in the Slow and Release Preview Rings. This is also the build that existing Windows 8.1 phones are likely to receive when upgrading to Windows 10.

Windows 10 Mobile Update

Microsoft also said they have added support for 4 more non-Lumia phones on the Current Branch for Insiders which makes them eligible to receive the latest update. These devices include MCJ Madosma Q501, BLU Win HD W510U, BLU Win HD LTE X150Q, and ALCATEL ONETOUCH Fierce XL.

Here’s what’s fixed in Windows 10 Mobile Insider Preview Build 10586.122

  • Improved Kanji input experience while using Continuum.
  • Improved the speed in which thumbnails appear for portrait videos.
  • Improved Internet Sharing on select mobile network configurations.
  • Fixed an issue in Microsoft Edge that prevented Word Flow input on some sites.
  • Fixed an issue that previously prevented the option to ‘Close all Tabs’ in Microsoft Edge from closing all open tabs.
  • Improved IMS registration on select mobile network configurations.
  • Fixed an issue where adding your MSA during OOBE would fail and prevent the account from being re-added after the failure.
  • Improved the email sync experiences when connecting to Wi-Fi networks with a captive portal.
  • Improved data connection profiles for dual SIM devices.
  • Updated background processing of multiple changes to improve battery life of devices.
  • Improved quality of video record to SD memory cards.
  • Improved video recording audio in some cases.
  • Improved overall OS reliability, including reliability of the Start screen, app updates, and the Windows Feedback app
  • Improved Alarm reliability.

In addition, Microsoft said those in the Fast ring who are yet to receive the update should opt for the Slow or Release Preview Rings to avail of the update.


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