Over the weekend Microsoft pulled the Windows 8.1 RT update from the Windows Store due to reports of it bricking devices during the upgrade. Microsoft said the problem was affecting a limited number of users but withdrew the update anyway. The good news is that the update is back in the Windows Store, the Microsoft Support Twitter account has just reported the update is available once again for Windows RT devices including the Surface RT and if you haven’t already got the new version you should grab the Windows 8.1 update.
Windows RT 8.1 update available again for free in Windows Store. Go update your Windows RT and Surface RT devices now!
— Microsoft Support (@MicrosoftHelps) October 22, 2013