Catalina Update?
How do I update to the latest software on my MacBook Air (early 2014) Currently running Sierra.
MacBook Air 13″, macOS 10.12
How do I update to the latest software on my MacBook Air (early 2014) Currently running Sierra.
MacBook Air 13″, macOS 10.12
Open in Safari.
Open in Safari.
Try the standalone in Safe Mode, but not using Firefox...
https://support.apple.com/kb/DL2048?viewlocale=en_US&locale=en_US
Safe Boot, (holding Shift key down at startup).
Catalina Update?