: Resolved issues where outgoing server information might be missing and fixed a bug preventing the display of messages and mailboxes.
OS X El Capitan 10.11.1 (build 15B42) was the first major update following the initial release of El Capitan in 2015. It focused on stability and compatibility, notably for , while adding support for over 150 new emoji characters .
Since 10.11.1 is a point release, it includes all primary El Capitan features: OS X El Capitan - App Store - Apple
The InstallESD.dmg file is the "Electronic Software Delivery" disk image containing the actual system files needed to install or restore the operating system. Key Features & Fixes in 10.11.1
