Device Support-Lifespan Observatory

What vendors do, not what they announce.

TP-Link

Archer A20 v3.6

Gone quiet reasonably evidenced

no firmware for long enough to stand out against its own record

364 days since the last release against a median gap of 43 (8.5x)

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Last firmware
30 September 2025 (12 months ago)
Releases seen
4
Update rhythm
about every 43 days
Support observed
≥2 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.

Firmware history

  1. Archer A20(US)_V3.6_1.1.1 Build 20250919 30 September 2025

    Release notes — disclosure 0.52 
    New Features/Enhancement: 1. Supported more parental control functions, including SafeSearch, YouTube Restricted, APP Time Limits, Always Allowed APPs, Offtime, etc. 2. Enhanced Web Filter, enriched visited/block history and optimized Blocked APPs for parental control. 3. Optimized QoS. 4. Enhanced security of device.

    Archived page, fetched 29 September 2026

  2. Archer A20(US)_V3.6_1.0.6 Build 20231011 1 November 2023

    Release notes — disclosure 0.32 
    Bug Fixed: Fixed a display bug when accessing the web UI on mobile devices.

    Archived page, fetched 29 September 2026

  3. Archer A20(US)_V3.6_1.0.5 Build 20230906 19 September 2023

    Release notes — disclosure 0.31 
    Modifications and Bug Fixes: Improve the stability of the equipment.

    Archived page, fetched 29 September 2026

  4. Archer A20(US)_V3.6_1.0.4 Build 20230728 31 August 2023

    Release notes — disclosure 0.43 
    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

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 A20

Judged by lifecycle-1 on 29 September 2026. How these verdicts are computed.

Machine-readable: JSON · RSS