Device Support-Lifespan Observatory

What vendors do, not what they announce.

TP-Link

Deco X55 v1.26

Gone quiet well evidenced

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

581 days since the last release against a median gap of 191 (3.0x)

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Last firmware
25 February 2025 (2 years ago)
Releases seen
5
Update rhythm
about every 6 months
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. Deco X55(US)_V1.26_1.4.6 Build 20250211 25 February 2025

    Release notes — disclosure 0.55
    New Features/Enhancements: Enhanced the wireless performance and the Mesh performance. Bug fixes: 1. Fixed the bug that satellite deco go offline when a significant number of Tapo devices were present in a Deco network; 2. Fixed the bug that setting port forwarding rules would disconnect all clients after setting DNS in DHCP server; 3. Fixed the bugs that client list is empty in some scenarios.
  2. Deco X55(US)_V1.26_1.4.0 Build 20240718 20 December 2024

    Release notes — disclosure 0.51
    New Features/Enhancements: 1. Added APP QoS feature. 2. Added wireguard VPN server/client feature. 3. Added client speed limit feature. 4. Supported WAN port fixed feature. 5. Support for new Kasa/Tapo models. 6. Supported third-party VPN. 7. Optimized performance of L2TP VPN server. 8. Improved system stability. Bug Fixes: 1. Fixed some bugs.
  3. Deco X55(US)_V1.26_1.2.0 Build 20231229 26 February 2024

    Release notes — disclosure 0.61
    New Features/Enhancements: 1. Added Camera Security feature. 2. Added Wi-Fi Access Control feature to support block list and allow list. 3. Advanced Parental Control subscription added APP block feature, which supports 2000+ applications. 4. Added Portal authentication for Guest Network. 5. Added detection of Ethernet backhaul link speed. 6. Added the support for Matter protocol. 7. Add the module of Eco Mode, Wi-Fi Schedule and Auto Update. 8. Optimize the collaboration with Tapo. Bug Fixes: 1. Fix some bugs related to roaming when working with some Intel network cards. 2. Fix the potential security vulnerability and its related problem. 3. Fix some bugs of potential problems related to algorithm.
  4. Deco X55(US)_V1.26_1.1.0 Build 20230522 14 June 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.
  5. Deco X55(US)_V1.26_1.0.1 Build 20221103 9 February 2023

    Release notes — disclosure 0.30
    First firmware released.

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 X55

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

Machine-readable: JSON · RSS