IOS 10 caused my ipad air 32gb to brick. I downloaded via Itunes, and it still went wrong. Its worst feature was the destruction of all my carefully selected and catalogued photo files. I had to delete the ipad photo cache on the pc before I could do anything. The usual hours of my life restoring my ipad and re-creating the photo files.
I quite like the ipad air, but it really needs a much bigger memory..............and Applewedontpaytax charge hundreds of pounds for a memory addition that costs them pennies.