Back up the phone and restore it from the back up, preferably using iTunes.
Today I got call from service about that the flash memory is dead or stuck and the phone is not being restored
Goodbye iphone 6 with iOS 11
R.I.P.
Hi
Make an appointment at Apple store For a out of warranty replacement
You will need to pay part of the cost.
Or contact Support.apple.com
Cheers
Brian 🇬-1F1E7;
I tried it on the iMac with the latest ios, on a PC with windows 10, on a PC with windows 7 ... the same error
Called Apple support and together we change the original cable to another original cable, one USB port to another USB port on the motherboard - the same error ...
iphone is still in recovery mode
so Apple support can`t help and sent me to the service center for a "hard update" ...
... now whithout my phone😕
if it's interesting I'll upload the video
iPhone 6 16Gb iOS 11.2 taken up 11.8Gb