Archer AX21 v5.6
Gone quiet reasonably evidenced
no firmware for long enough to stand out against its own record
389 days since the last release against a median gap of 121 (3.2x)
- Last firmware
- 5 September 2025 (1 year ago)
- Releases seen
- 3
- Update rhythm
- about every 4 months
- Support observed
- ≥8 months
- 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 v2.6 (US) Slowing down 5 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
Firmware history
-
Archer AX21(US)_V5.60_1.1.2 Build 20250814 5 September 2025
Release notes — disclosure 0.25
New Features/Enhancements: Added support for VPN kill switch feature. Bug Fixes: Enhanced system stability and security.
Archived page, fetched 29 September 2026
-
Archer AX21(US)_V5.6_1.0.2 Build 20250224 6 May 2025
Release notes — disclosure 0.54
Modifications: 1. Enhanced the stability of the device. 2. Enhanced the security of the device. 3. Fixed some UI bugs. 4. Fixed the issue of not being able to successfully connect to the L2TP/IPSec VPN server under certain circumstances 5. Fixed the issue of not being able to disconnect the ongoing application after the Sleeptime/Bedtime is reached.
Archived page, fetched 29 September 2026
-
Archer AX21(US)_V5.6_1.0.1 Build 20241108 6 January 2025
Release notes — disclosure 0.30
First firmware released.
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.