- Joined
- Nov 25, 2015
- Messages
- 536
- Motherboard
- AsRock Fata1ity Z270 Gaming ITX
- CPU
- i5-7500
- Graphics
- WX5100
How did you do that? Any advice?
This person probably prepared with creating a High Sierra UniBeast Drive with all the necesary things needed to do a fresh install before attempting the Security Update. That is what I did in case things go wrong.