Chosen Solution
iPhone 6 only boots to DFU mode. I used 3utools and it detects the phone. I was even able to restore the phone using the latest iOS and during that time it switches between DFU and normal mode. However, when it finishes restoring.. boots right back into DFU mode. Nothing ever comes on screen. I bought this phone secondhand. Not sure if the screen is a replacement but the phone looks to be in mint condition.
Where you aware that you were buying a defective phone? Stuck in DFU is most probably a logic board issue. Without knowing the history of the device, it’s hard to say what is wrong.
