Update jailbroken ipad 3 from iOS6 to iOS7

Hi I have a jailbroken ipad 3 (Wifi only) on iOS 6.1.2. I am looking to update it to iOS 7.0.6. I have downloaded the ipsw and am trying to restore it using DFU mode and tinyumbrella. I keep getting the 4014 error. I tried different cables, USB ports as well as a different PC. Can someone tell me if it is possible to update it from 6.1.2 to 7.0.6 ? If yes, can anyone help me with the steps. Thank you.