Update my macOS Sierra Version 10.12.6 (16G2136) to the newest version 10.13.
I am trying to update my macOS Sierra Version 10.12.6 (16G2136) to the newest version 10.13. I went to Software Update it has no update. So I downloaded the MacOs version 10.13 off of the apple site but its telling me I need the update in order to open the file. How do I get the newest update ?
MacBook Pro 13″, macOS 10.12