Windows 10 Mobile preview
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Microsoft has released a new insider preview update of its Windows 10 Mobile operating system with a large range of bug fixes, but introduced a new flaw that requires users to downgrade to Windows Phone 8.1 to install it.
The company's general manager for operating systems, Gabe Aul, said build 10549 - which is available on the Windows insider program fast ring release schedule - contains a bug that causes devices upgraded from earlier versions of Windows 10 mobile to brick with a black screen.
Despite the bug, Microsoft has taken the unusual step of not pulling the faulty build of Win10 Mobile, and instead released it as an update from Windows Phone 8.1, Aul said.
http://www.itnews.com.au/news/buggy-win10-mobile-preview-build-requires-downgrade-410524
