I have a 13 inch macbook pro, early 2011 with mac os High Sierra. Recently I had to erase my Solid Disk Hard drive and reinstall Mac OS High Sierra. Since then, I got an update from App Store for the security update mac OS High Sierra 10.13.6 (that I need for installing Xcode 10) and everytime I try to download it, it either resets when its half downloaded or when installed, crashes the Mac OS and cannot find the OS.
Could it be my hard drive? (It is pretty new, bought 1 and a half years ago).
Could anybody help me?