Trying to restore my iPhone but neither of my Macs recognize it
I have an old 6 that suddenly stopped working during a IOS upgrade. I am trying to restore from iTunes as instructed but neither of my 2 Mac's recognize it and hence not seen by iTunes. It charges well and the USB cable works on my iPad so not broken either.
I even tried to reset completely (don't mind doing a new setup), but I don't even get that option. It goes into a loop after each reboot (10 sec holding) so I am stuck.
Any suggestions?
[Re-Titled by Host]
iPhone 6