![]() (These are downloaded off of Apple not a 3rd party site.) (The following disk images couldn’t be opened) “reason”: invalid checksum (This software is not supported on your system) Even though that’s what is running. I’ve tried downloading the 3 versions of macOS High Sierra: 10.12 And the only way to restore default settings is to use a bootable CD or use the USB method. That does nothing.Īpple said the Mac didn’t have that feature built into it at the time. First was prompted to use (Command, R) didn’t work, just pulls up cancel or no cymbal.MacBook Pro can’t command R and can’t install versions of macOS Hi there,
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