iPhone 5S stuck in DFU

Sykulski

Member
Hi. I got this iPhone 5S in for data recovery. I can not kick it out of DFU mode. I normally don't fix phones so I really need a hint here. After searching Google I tried keeping both buttons pushed in and tried some software tools (Recboot, Reiboot, Wondershare, Mobisaver). None of them works. I also tried put in a new power-button and new charging-port-flex and new battery and new screen. It seems like the logic board automatically goes into DFU when turning on after all power was removed. I can see that a "Apple Mobile Device (DFU Mode)" is connected in the same moment as I connect it to my computer. Is this a known issue ?
 
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