When Microsoft announced that they will definitely upgrade all devices running Windows Phone 8.1, I ( am sure all of you) had serious doubts if devices like Lumia 520, which houses, 512 MB RAM will get the same upgrade and will it have the performance. The doubt has changed to confirmation, Officially. Windows Phone Devices with 512 MB RAM won’t get Upgrade to Windows 10 Mobile according to a tweet from Windows Insider’s Official account.
When Corey asked Gabe Aul about Microsoft’s plan to put Windows 10 Mobile on devices with 512 MB RAM like Lumia 635, Windows Insiders account replied that “We do not have any plans to put W10M on devices with 512MB”
@coreyd_0512 We do not have plans to put W10M on devices with 512 MB ^TJ
— Windows Insider (@windowsinsider) March 17, 2016
Not only the devices, but there are few more devices like Lumia 920, 925, 1020, 1320 HTC 8S/8X, ATIV S which had 1 GB of RAM aren’t getting the update as well. Most of them did not meet the performance expectation even though they where upgraded to Windows 10 Mobile using the insiders program.
Here is what happens when you use Upgrade Advisor to Check
While we do like that a straight forward answer is the best way, but since low end lamias, specially the Lumia 520 formed a majority of users base, this is going to be very disappoint for many. If you are very keen to get the Windows 10 Mobile upgrade, Insiders is the only way to go ahead. Below is the video explaining the process.