Device Support-Lifespan Observatory

What vendors do, not what they announce.

TP-Link

Archer A20 v1

Actively updated well evidenced

firmware is arriving about as often as it always has

364 days since the last release against a median gap of 520 (0.7x)

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Last firmware
30 September 2025 (12 months ago)
Releases seen
5
Update rhythm
about every 1 year
Support observed
≥7 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)_V1_1.2.1 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)_V1_1.1.4 Build 20231011 8 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)_V1_1.1.3 Build 20230907 15 September 2023

    Release notes — disclosure 0.41 
    Bug Fixed: 1. Fixed some security issues. 2. Fixed the bug that parental control doesn't take effect.

    Archived page, fetched 29 September 2026

  4. Archer A20(US)_V1_191026 2 December 2019

    Release notes — disclosure 0.64 
    New Features/Enhancement: 1. Optimized the Parental Controls function; 2. Optimized the HomeCare function, you can manage HomeCare function via Tether APP; 3. Optimized the DHCP function; 4. Supported the smart connect; 5. Added DNS TCP DNAT forwarding rules. Bug Fixed: 1. Fixed the bug that when the portal of the Guest Network is opened, the blocking page of the portal will pop up continuously after the authentication is passed; 2. Fixed the bug that when the length of the password entered in the login screen exceeds 32 bits, the excess part will be discarded; 3. Fixed the bug that Panasonic devices cannot find the paired device in the LAN network; 4. Fixed the bug that 2.4G probabilistic power anomaly.

    Archived page, fetched 29 September 2026

  5. Archer A20(US)_V1_181122 18 December 2018

    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 A20

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

Machine-readable: JSON · RSS