I'm not sure how widespread this is but just something to note.
Android 5.0 update bricks several Nexus 7 units both first and second-generation - http://www.phonearena.com/news/Andro...-slabs_id68155
Android 5.0 update bricks several Nexus 7 units both first and second-generation - http://www.phonearena.com/news/Andro...-slabs_id68155



