iPhone 6s Plus A1634 Stuck in DFU Mode

[CaliPhil]

I am new to this forum so please forgive if I am posting in wrong section?! I have an iPhone 6s Plus A1634 that is hopeless stuck in DFU Mode and cannot get it to exit DFU Mode no matter what I try to do. It is currently black screen, non responsive to any commands via button combinations. I have tried restoring from itunes and it continuously pops up with a different error with each restore attempt. Error codes 9, 2005, 2009, 4014, etc. I have tried using ReiBoot Pro and continuously get an error that Firmware and device model do not match. It automatically suggested and downloaded firmware ios 11.2.5. Research tells me that original Stock firmware was 9.0.1 (13A405). I am desperate to get this phone working as it is my primary phone. Should I just download and try to flash the original firmware or will that even work? If not, I am lost and don't know what else to do as I cannot afford to go out and buy another phone. Any suggestions on how to recover this phone would be greatly appreciated. Thank you so so much in Advance.

[Grace Liu]

Try to easy flash on 3uTools, if it still fails, it might be hardware problem.

[wawangsdui]

Force start iPhone, if useless, turn to Eelphone iOS System Repair to fix it, it's useful, I've used it to fix my dead iPhone.