iPhone update - unknown error occurred (53).
IPHONE 6
Yesterday I connected my iPhone 6 to iMac Version 10.11.6 (OS X EL CAPITAN) to charge it
up. I got a message that there was a software update for the phone and I selected the
update. I then got this message: iPhone could not be restored. An unknown error occurred (53).
I tried to restore factory settings and again got error message.
My phone is not usable now, the screen shows the iTunes icon, with message
supportapple.com/phone/restore
What can I do to get my phone working again?
iPhone 6, iOS 12