... a fresh copy will be the
latest iteration: 10.11.6, but without the later security updates.
If ... an older installer earlier than 10.11.6, you’ll need the 10.11.6 Combo Update (1.5 GB) that'll work on any version 10.11.x. You can
download it manually with any browser or use the App Store app.
I believe the security updates include all previous security updates (cumulative), so you’ll only need one: Security Update 2017-005 El Capitan (630.4MB). You can ...
download it manually with any browser or use the App Store app.