Here are the steps to take if you need to restore your iPhone with DFU mode.
I have an iPhone 6s that is in a boot loop. The Apple logo comes on for 3-4 seconds, and then it goes off for 3-4 seconds, ad infinitum. I tried a hard reset, and nothing improved. I put the iPhone ...
[UPDATE] Evan Osnos tweets that he is now restoring iPad via DFU mode. DFU stands for Device Firmware Update. It is somehow related to Recovery Mode but is one's best chance to get out of more ...