Archer AX21 v2.6
Slowing down well evidenced
updates are coming less often than this product's own history
376 days since the last release against a median gap of 227 (1.7x)
- Last firmware
- 18 September 2025 (1 year ago)
- Releases seen
- 5
- Update rhythm
- about every 7 months
- Support observed
- ≥4 years
- Vendor's promise
- no support period we can evaluate
- Patch latency
- not measurable — its changelogs name no CVE ids
Which one do I have?
TP-Link ships this model in more than one hardware revision, and they do not share firmware. The revision is printed on the label on the underside, usually after the model — Ver 1.0, V4.6. Getting it wrong is the easiest way to read the wrong answer here.
- Archer AX21 v1.2 (US) Slowing down 12 releases
- Archer AX21 v1.26 (US) Gone quiet 2 releases
- Archer AX21 v2 Gone quiet 1 releases
- Archer AX21 v2 (US) Slowing down 9 releases
- Archer AX21 v3 (US) Gone quiet 8 releases
- Archer AX21 v3.6 (US) Gone quiet 7 releases
- Archer AX21 v4 Not enough evidence 0 releases
- Archer AX21 v4.6 (US) Slowing down 5 releases
- Archer AX21 v5.46 (US) Not enough evidence 1 releases
- Archer AX21 v5.6 (US) Gone quiet 3 releases
Firmware history
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Archer AX21(US)_V2.60_2.1.9 Build 20250424 18 September 2025
Release notes — disclosure 0.11
Enhancements 1. Improved overall security and stability.
Archived page, fetched 29 September 2026
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Archer AX21(US)_V2.6_2.1.8 Build 20230829 31 August 2023
Release notes — disclosure 0.42
This update is recommended for all users and provides important security updates Modifications and Bug Fixes 1. Enhance device security; 2. Improve the stability of the equipment.
Archived page, fetched 29 September 2026
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Archer AX21(US)_V2.6_230426 27 April 2023
Release notes — disclosure 0.25
Note: 1. Improved system stability 2. Fixed some security issues
Archived page, fetched 29 September 2026
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Archer AX21(US)_V2.6_2.1.7 Build 20221125 2 December 2022
Release notes — disclosure 0.58
New Features/Enhancement: 1. Enhance device security; 2. Fixed the bug that if you manually configure DNS for IPv4 in PPPoE co-session scenarios, the ISP DNS is still configured for domain name resolution; 3. Fixed the bug that the RA configuration does not take effect correctly in specific cases during IPv6; 4. Fixed the bug that when enabling PPPoEV6, the field carried by PPPoE dial-up does not contain the service name; 5. Fixed the bug that the TimeMachine does not work under Macos13.1.
Archived page, fetched 29 September 2026
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Archer AX21(US)_V2.6_211231 28 January 2022
Release notes — disclosure 0.53
Enhancement: 1.Improved wired and wireless stability; 2.Maximum wireless devices on single band increased to 128; 3.Updated dnsmasq version. Bug Fixed: 1.Fixed the bug that the router has unstable Internet connection in some cases; 2.Fixed the bugs on the Web UI; 3.Fixed the bug that parent control will take affect one hour earlier after the end of daylight saving time.
Archived page, fetched 29 September 2026
Evidence
One archived page sits behind this record, the earliest read on 1 August 2026. Everything above was read from it, and each is kept byte for byte so it can be checked after the vendor edits the original.
Identifiers: marketing_name Archer AX21
Judged by lifecycle-1 on 29 September 2026.
How these verdicts are computed.