A recent hack, posted to XDA Developers forum by RustyGrom, reveals the ability to install Windows 10 Technical Preview on an AT&T Lumia 1520. RustyGrom found a way to trick the Windows Insider app into thinking any Windows Phone 8.1 is able to upgrade to Windows 10 Technical Preview.
RustyGrom was only able to do this to an AT&T Lumia 1520, but he does mention in his post that it could possibly be done with other Lumia devices, but it “might require tweaks to the XML. It is very possible to brick your phone with this.” So basically if you can’t wait for Microsoft to release Windows 10 Technical Preview to your Lumia, you can try the hack at your own risk.



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