Apple did the same thing to the original ipad. It was a great device with ios 3.x when it launched. The ios 4.x -> 5.x transition rendered it useless. The original ipad had just 256 megs of ram, around the time ios 5. arrived the ipad 3 was out with 1 GB of RAM. As a result you could see that apples own apps were making assumptions about system resources that were not true on the ipad 1. Safari, Itunes etc would crash routinely. Added bonus with apple is that they dont allow you to downgrade to previous versions of ios.