How to fix the Blue LED error on some BlackBerry 10 devices running BlackBerry 10.3.1

Some BlackBerry Z10 and BlackBerry Q10 users have been running into a problem since back in November when leaked or developer versions of BlackBerry 10.3.1 were available. Some owners of both models who loaded the non-final versions of the new OS build on their phone, found that all of their data was gone and a blue LED light was blinking after manually restarting their handset...

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