I have an Ipad 4 with 6.1.3 saved. I also have another Ipad 4 with 6.1 and 6.1.2 saved on the device. I need to sell 1 of them so which one would you suggest I keep. Also how could I save the blob onto my computer. Is there a way to check if the blob is valid because I was confused as to the APticket you had mentioned. Thanks a bunch in advance.