Release appearance
iOS 9.2.1 Public
Recorded context
About this appearance
The public iOS 9.2.1 release repaired MDM-managed app installation and delivered documented security corrections, including captive-portal cookie isolation.
- Date
- Jan 19, 2016
- Availability
- available
- Revision
- No
Chronology evidence
Appearance sources
These sources support the recorded date, channel, or availability. A researched release-notes article has not been added.
- About iOS 9 Updates
Apple Support · 2026-07-30 · iOS 9.2.1 — MDM server app installation
- About the Security Content of iOS 9.2.1
Apple Support · 2026-07-30 · iOS 9.2.1 security content
- About iOS 9 Updates
Apple Support · 2026-07-30 · iOS 9.2.1
- About the Security Content of iOS 9.2.1
Apple Support · 2026-07-30 · WebSheet — CVE-2016-1730
Release changes
Changed in this release
Features, fixes, removals, and regressions first observed in this release record.
bugFix · fixed
MDM app installation completion
Apple fixed a condition that could prevent an app installation managed by an MDM server from finishing.
- [1] About iOS 9 Updates · iOS 9.2.1 — MDM server app installation
security · fixed
Captive-portal cookie isolation
Apple addressed CVE-2016-1730 by isolating cookies for captive portals, preventing the documented read-or-write access to a user’s cookies.
- [1] About the Security Content of iOS 9.2.1 · WebSheet — CVE-2016-1730