Here are the instructions on how to trick the Windows Phone Update service to update your unsupported Windows Phone 8.1 to the latest Windows 10 Mobile preview.
| Channel | Publish Date | Thumbnail & View Count | Actions |
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 Pureinfotech | 2017-07-27 21:23:30 |  23,075 Views |
Windows 10 Build 16251: Hands-on experience with Phone-PC shortcut, Cortana, Skip Ahead and more
When Microsoft officially released Windows 10 Mobile as an upgrade to Windows Phone 8.1, it was a big day for many users. However, many users were disappointed to learn that many older phones, including the Lumia 920, 925, and 1020, cannot be upgraded to the new version and will no longer receive any previews.
If you're still determined to update your Windows Phone 8.1 handset to the latest Redstone preview builds, you can unlock your phone and replace some registry keys to trick your phone into thinking it's a supported model, which provides full access to download and install the latest versions of Windows 10 Mobile.
This guide, originally published on the XDA Developers forums, provides instructions on how to enable Windows 10 Mobile Insider Preview on your unsupported Windows Phone 8.1 mobile phone.
