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Release record

tvOS 10.2.1

Full article
Public release
Recorded milestones
6
Beta cycle
48d
Average interval
10d
Public release
May 15, 2017

Release notes

Overview

Editorial synthesis with inline references and a source ledger when citations are available.

Release overview

tvOS 10.2.1 was released on May 15, 2017 for Apple TV (4th generation). Because Apple's retained consumer history starts at tvOS 11, the supported article scope is the dedicated security advisory.[1][2][3]

Evidence boundary

The article makes no claim about unnamed feature, performance, or stability changes. Specific statements come only from Apple's version-labeled advisory and release index.[4][5]

Source ledger

References

Sources are linked to the claims they support. Publication and access dates are shown when available.

  1. About the security content of tvOS 10.2.1

    Apple Support · Apple · 2017-05-15T00:00:00.000Z · Released May 15, 2017

    Back to text ↑
  2. About Apple TV 4K and Apple TV HD software updates

    Apple Support · Apple · 2026-07-29 · Retained update history begins at tvOS 11

    Back to text ↑
  3. Apple security updates (2016 to 2017)

    Apple Support · Apple · 2023-11-06T00:00:00.000Z · tvOS 10.2.1 — 15 May 2017

    Back to text ↑
  4. About Apple TV 4K and Apple TV HD software updates

    Apple Support · Apple · 2026-07-29 · Oldest retained section: tvOS 11

    Back to text ↑
  5. About the security content of tvOS 10.2.1

    Apple Support · Apple · 2017-05-15T00:00:00.000Z · tvOS 10.2.1 security content

    Back to text ↑

Documented & observed

Changes in this version

Source-linked features, fixes, known issues, removals, and community-observed behavior recorded across this version’s appearances and verified builds.

Release changes

Changed in this release

Features, fixes, removals, and regressions first observed in this release record.

security · fixed

JavaScriptCore, WebKit, and Web Inspector repairs

documentedconfirmed

Apple's advisory groups multiple malicious-web-content vulnerabilities across JavaScriptCore, WebKit, and its inspection tooling.

Recorded at Public

  1. [1] About the security content of tvOS 10.2.1 · JavaScriptCore; WebKit; WebKit Web Inspector

security · fixed

Video, audio, Foundation, and text-processing repairs

documentedconfirmed

Apple's advisory identifies kernel-privilege, restricted-memory, denial-of-service, and crafted-data code-execution risks.

Recorded at Public

  1. [1] About the security content of tvOS 10.2.1 · AVEVideoEncoder; CoreAudio; CoreFoundation; CoreText; Foundation

Milestones

Release history

Every recorded channel appearance in chronological order. Open an appearance for any available build, scope, notes, and sources.

  2. +13 days
  3. +7 days
  4. +7 days
  5. +10 days
  6. +11 days

    Public release

    Public

    Full articleEditorially verified

    tvOS 10.2.1 reached the public channel on May 15, 2017 with documented repairs in video, audio, data, text, system surfaces, databases, text input, JavaScriptCore, WebKit, and Web Inspector.

    Availability
    available
    Sources
    8 linked
    Open this appearance

Historical context

Cycle comparison

Pace, intervals, and duration compared with earlier releases on the same platform.

Historical avg for .2.1 releases

40 days, 5.0 milestones

Based on 1 previous tvOS .2.1 releases

Cycle vs. platform average

48d (avg: 58d)

10 days shorter than the tvOS average

Duration ranking

#26 of 50

Middle of the pack tvOS beta cycles

Longest gap in this cycle

13 days

Between Beta 1 and Beta 2

Previous .2.1 releases (tvOS)

Previous comparable tvOS releases
VersionYearCycleMilestonesAvg. Interval
tvOS 9.2.1201640d510d

Scroll horizontally to compare every historical field.

Official release notes