Device Support-Lifespan Observatory

What vendors do, not what they announce.

TP-Link

Deco X25 v3.6

Actively updated reasonably evidenced

firmware is arriving about as often as it always has

89 days since the last release against a median gap of 76 (1.2x)

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Last firmware
3 July 2026 (3 months ago)
Releases seen
10
Update rhythm
about every 2 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.

Firmware history

  1. Deco X25(US)_V3.6_1.4.0 Build 20260507 3 July 2026

    Release notes — disclosure 0.50 
    New Features/Enhancements: 1. Improved system security and stability. 2. Added the VPN Kill Switch feature. 3. Supported WireGuard VPN. Bug Fixes: 1. Fixed the bug that the wireless network name (SSID) might not update immediately after configuration changes in some scenarios. 2. Fixed the bug that incorrect WPS capability information might be broadcasted in some scenarios.

    Archived page, fetched 29 September 2026

  2. Deco X25(US)_V3.6_1.2.4 Build 20241227 17 February 2025

    Release notes — disclosure 0.42 
    New Features/Enhancements: 1. Improved system stability. 2. Improved the accuracy of client list display. Bug Fixes: 1. Fixed the bug that the online time and traffic history were displayed blank in some scenarios.

    Archived page, fetched 29 September 2026

  3. Deco X25(US)_V3.6_1.2.2 Build 20241009 21 November 2024

    Release notes — disclosure 0.36 
    Enhancements: 1. Optimized network mesh experience in some scenarios. Bug Fixes: 1. Fixed the bug that parental control settings cannot be saved in some scenarios.

    Archived page, fetched 29 September 2026

  4. Deco X25(US)_V3.6_1.2.1 Build 20240723 26 September 2024

    Release notes — disclosure 0.06 
    Fixed some security vulnerabilities.

    Archived page, fetched 29 September 2026

  5. Deco X25(US)_V3.6_1.2.0 Build 20240606 29 July 2024

    Release notes — disclosure 0.58 
    Modifications and Bug Fixes: 1. Added Guest Network Portal feature. 2. Added Camera Security feature. 3. Added Wi-Fi Access Control whitelist. 4. Added Location custom feature. 5. Added LAN cable specification detection function. 6. Added Deco automatic upgrade function. 7. Added ECO Mode function. 8. Improved security and stability. 9. Fixed the problem of empty client list in some cases. 10. Fixed the bug where the guest network would be reset to the default value. 11. Optimized the IPv6 related features.

    Archived page, fetched 29 September 2026

  6. Deco X25(US)_V3.6_1.1.5 Build 20231026 30 November 2023

    Release notes — disclosure 0.41 
    Modifications and Bug Fixes: 1. Improve compatibility of Wi-Fi frequency. 2. Fix the bug of disconnections with Beeline.

    Archived page, fetched 29 September 2026

  7. Deco X25(US)_V3.6_1.1.4 Build 20230824 15 September 2023

    Release notes — disclosure 0.63 
    New Features/Enhancements: 1. Support for customizing Satellite Deco signal source. 2. Support for customizing Clients connection preference. 3. Support for Reboot Schedule. 4. Support for NO-IP and DynDNS. 5. Support for setting Effective Time and Bandwidth Limit for guest network. 6. Added Smart DHCP switch under Access Point mode. 7. Added an alert in the App when the main Deco and modem negotiation speed is only 10/100Mbps. 8. Added VPN server/client features, including Open VPN, L2TP VPN and PPTP VPN. 9. Added the static route function. 10. Added the ability to customize the MTU. 11. Added IOT network function. 12. Added SafeSearch function and Youtube Restrict function in the Homeshield. 13. Optimized the Homeshield function. 14. Improved system stability.

    Archived page, fetched 29 September 2026

  8. Deco X25(US)_V3.6_1.1.0 Build 20230725 21 August 2023

    Release notes — disclosure 0.63 
    New Features/Enhancements: 1. Support for customizing Satellite Deco signal source. 2. Support for customizing Clients connection preference. 3. Support for Reboot Schedule. 4. Support for NO-IP and DynDNS. 5. Support for setting Effective Time and Bandwidth Limit for guest network. 6. Added Smart DHCP switch under Access Point mode. 7. Added an alert in the App when the main Deco and modem negotiation speed is only 10/100Mbps. 8. Added VPN server/client features, including Open VPN, L2TP VPN and PPTP VPN. 9. Added the static route function. 10. Added the ability to customize the MTU. 11. Added IOT network function. 12. Added SafeSearch function and Youtube Restrict function in the Homeshield. 15. Optimized the Homeshield function. 16. Improved system stability.

    Archived page, fetched 29 September 2026

  9. Deco X25(US)_V3.6_1.0.9 Build 20230530 4 July 2023

    Release notes — disclosure 0.33 
    Improvements: Optimized the HomeShield feature, please update your Deco app (iOS version 3.3.55 or above, Android version 3.3.65 or above) to fully utilize it.

    Archived page, fetched 29 September 2026

  10. Deco X25(US)_V3.6_1.0.3 Build 20220609 25 August 2022

    Release notes — disclosure 0.30 
    First firmware release.

    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 Deco X25

Judged by lifecycle-1 on 30 September 2026. How these verdicts are computed.

Machine-readable: JSON · RSS