Hello and welcome to Apple Support Communities, JetterII.
If I understand your post correctly, you're unable to complete the upgrade to High Sierra and you're unable to boot up normally. I'd like to help.
Are you able to boot into macOS Recovery? This article will show you how to get there and use recovery:
About macOS Recovery
Let us know if that resolves this issue for you.
Thanks for using the Apple Support Communities. Take care.
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Hello and welcome to Apple Support Communities, JetterII.
If I understand your post correctly, you're unable to complete the upgrade to High Sierra and you're unable to boot up normally. I'd like to help.
Are you able to boot into macOS Recovery? This article will show you how to get there and use recovery:
About macOS Recovery
Let us know if that resolves this issue for you.
Thanks for using the Apple Support Communities. Take care.
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Thx for your help, now it boot up already and High Sierra installed too.
Mbpr installs High Sierra by Recovery install, now it stopped dowload High Sierra. I can’t boot and work on my Mac