Chosen Solution
First of all, my Iphone 6s turn off with him self , when i forced it to start , it show me the iTunes logo and the cable, so i plugged it to computer and start to up graduate it to IOS11 it show me the Apple logo and the upgrade bar and when its near to complete the up graduation and the phone restart , i did try to change the battery Please help
Die you try DFU mode? I don’t really understand what you already tried it what the current problem with the phone is. Is it turned off at the moment? Does iTunes recognise it?
Have you tried a different PC? try that, and make sure itunes is on the latest version.
