Device Support-Lifespan Observatory

What vendors do, not what they announce.

TP-Link

Tapo C403 v1.6

Gone quiet well evidenced

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

328 days since the last release against a median gap of 90 (3.7x)

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Last firmware
5 November 2025 (11 months ago)
Releases seen
5
Update rhythm
about every 3 months
Support observed
≥1 year
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. Tapo C403(US)_V1.6_1.2.1 Build 250917 5 November 2025

    Release notes — disclosure 0.40 
    Modifications and Bug Fixes: 1. Enhanced device security. 2. Enhanced wireless connection stability. 3. Improved battery life performance. 4. Improved detection performance.

    Archived page, fetched 29 September 2026

  2. Tapo C403(US)_V1.6_1.0.24 Build 250314 24 March 2025

    Release notes — disclosure 0.47 
    Modifications and Bug Fixes: 1. Optimized the stability when connecting to a mesh network. 2. Optimized the cloud recordings performance. 3. Enhanced device stability. 4. Fixed the fast battery drain issue in certain scenarios. 5. Fixed some minor bugs.

    Archived page, fetched 29 September 2026

  3. Tapo C403(US)_V1.6_1.0.23 Build 241119 27 December 2024

    Release notes — disclosure 0.51 
    Modifications and Bug Fixes: 1. Added support for 12-hour Time option and more timestamp formats. 2. Added support for Tapo Hub connection, supporting Wi-Fi connection with Tapo Hub H200 and store video clips to the Hub. 3. Optimized the stability of Wi-Fi connection. 4. Optimized the cloud recordings performance. 5. Optimized the detection performance. 6. Extended the battery life in some cases. 7. Fixed some minor bugs.

    Archived page, fetched 29 September 2026

  4. Tapo C403(US)_V1.6_1.0.21 Build 240905 12 October 2024

    Release notes — disclosure 0.47 
    Modifications and Bug Fixes: 1. Optimized AI Detection performance. 2. Optimized the night vision image performance for many scenarios. 3. Enhanced the image quality in complex scenes. 4. Optimized the performance of wireless connectivity. 5. Fixed some minor bugs.

    Archived page, fetched 29 September 2026

  5. Tapo C403(US)_V1.6_1.0.18 Build 240705 12 July 2024

    Release notes — disclosure 0.50 
    Modifications and Bug Fixes: 1. Added support for abnormal power consumption notification. 2. Improved device configuration experience. 3. Optimized the performance of the Detection function. 4. Optimized the night vision image performance. 5. Optimized the battery performance. 6. Fixed the problem of no cloud videos in some cases. 7. Fixed some minor bugs.

    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 Tapo C403

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

Machine-readable: JSON · RSS