Microsoft today released a new Windows 10 for phones build 10051 for Lumia Windows Phone devices. If you’re a Windows Phone customer and love to try the latest stuff before anyone else, or a Developer or IT Pro who works with Windows Phones, joining the Windows Insider program and trying out this build may be right for you. Otherwise, wait for official release.
Follow these steps to download Technical Preview:
Sign up for the Windows Insider Program, if you haven’t already.
Find out if Technical Preview is right for you, and make sure your phone is on the list of supported phones. Prerelease software doesn’t always work as expected, and could cause your phone to stop working permanently.
Open this webpage from your phone, and then click Download the Windows Insider app. You can also search for the Windows Insider app in the Store from your phone.
Once it finishes downloading, open the Windows Insider app on your phone and follow the instructions to install Technical Preview. You’ll have the option to choose whether you want to get new builds fast or slow. Choose Fast to get updates as soon as they’re available, or choose Slow to wait until builds are a little more stable before you update.
Devices supported with this build:
Lumia 530 Dual Sim
Lumia 630 Dual Sim
Lumia 730 Dual SIM
Microsoft Lumia 430
Microsoft Lumia 435
Microsoft Lumia 435 Dual SIM
Microsoft Lumia 435 Dual SIM DTV
Microsoft Lumia 532
Microsoft Lumia 532 Dual SIM
Microsoft Lumia 640 Dual SIM
Microsoft Lumia 535 Dual SIM