​Microsoft issues fix for Lumia phones bricked by Windows 10 Fast lane

Microsoft has released a possible fix for low-end Lumia smartphones that have been bricked after installing an early Windows 10 preview build.

It seems a shortage of memory in the Lumia 520 and Lumia 525 is behind the bricking of some of the units, after owners installed a Windows 10 Technical preview build, named 10051, released through Microsoft's tester Fast lane.

In an update on its Windows Insider Program site on Friday, Microsoft said only a "small portion" of Lumia 520 and 521 devices were affected.

Microsoft last week pulled down the test build for the Lumia 520, 525, and 526, following reports that some of the handsets were becoming unusable, typically after using Microsoft's Windows Phone Recovery Tool (WPRT) to roll back to Windows Phone 8.1. Affected devices were left with "no direct way for an end-user to check their device", Microsoft said.

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