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
Question: iPhone 6 16Gb iOS 11.2 taken up 11.8Gb