Chosen Solution

Hi there, I’m having trouble with an iPhone, Its the XR, When you connect it to iTunes/3U tools the phone is recognized by both as being in DFU mode, When you click on restore/update the phone begins to restore, when its completed and reboots it goes straight back into DFU mode, I have tried to take it out of DFU mode with no joy, I’m hoping someone has come across this before. Thanks.

Does the phone came in contact with liqiud ? If not try to connect your iphone to Itunes or 3U Tools with a disconnected cam and screen, only connected to your logic board is dock connector and battery and then do the update/restore. After the update/restore you can connect the screen, camera etc one by one so you know where the fault is.