Deco X20 v4

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.

• Deco X20 v1 (US) Gone quiet 12 releases
• Deco X20 v1.2 (US) Slowing down 7 releases
• Deco X20 v1.26 (US) Slowing down 3 releases
• Deco X20 v1.6 (US) Not enough evidence 2 releases
• Deco X20 v2 (US) Gone quiet 15 releases
• Deco X20 v2.6 (US) Slowing down 8 releases
• Deco X20 v3 (US) Actively updated 14 releases
• Deco X20 v3.26 (US) Gone quiet 1 releases
• Deco X20 v3.6 (US) Actively updated 13 releases
• Deco X20 v4.6 (US) Slowing down 6 releases
• Deco X20 v5 (US) Not enough evidence 1 releases
• Deco X20 v5.6 (US) Not enough evidence 2 releases

Firmware history

1. Deco X20(US)_V4_1.7.1 Build 25080612 2 February 2026

   Release notes — disclosure 0.56

   New Features/Enhancements: 1. Added Internet Backup functionality to automatically switch to a backup network when the primary network fails. 2. Added support for DoH (DNS over HTTPS) and DoT (DNS over TLS). 3. Introduced VPN Kill Switch to secure connections during VPN disruptions. 4. Optimized 2.4GHz mesh networking. Bug Fixes: 1. Fixed an issue where DS-Lite or v6plus dial-up could fail during configuration in certain scenarios. 2. Fixed an issue where MRU did not take effect after PPPoE negotiation.

   Archived page, fetched 29 September 2026

2. Deco X20(US)_V4_1.5.5 Build 20240718 15 August 2024

   Release notes — disclosure 0.51

   New Features/Enhancements: 1. Increased networking number; 2. Added the low-power feature; 3. Enhanced the VPN performance; 4. LED schedule feature supported control of individual device LEDs; 5. Enhanced the system security; Bug Fixes: 1. Fixed the bug of incorrect WAN port recognition; 2. Fixed the bug that DNS lost when renewing dialing.

   Archived page, fetched 29 September 2026

3. Deco X20(US)_V4_1.2.0 Build 20231221 25 January 2024

   Release notes — disclosure 0.57

   New Features/Enhancements: 1. The default Wi-Fi will be encrypted. 2. Added Camera Security, Wi-Fi Access Control feature. 3. Advanced Parental Control subscription added APP block feature. 4. Supported Portal authentication for Guest Network. 5. Supported Matter protocol. 6. Add the module of Eco Mode, Wi-Fi Schedule and Auto Update. 7. Optimize the collaboration with Tapo. 8. Improved system stability. Bug fixes: 1. Fixed several security vulnerabilities that were exposed at hackathons. 2. Fixed compatibility issue with Intel AX series wireless network adapters.

   Archived page, fetched 29 September 2026

4. Deco X20(US)_V4_1.1.1 Build 20230721 25 August 2023

   Release notes — disclosure 0.30

   Fixed some bugs.

   Archived page, fetched 29 September 2026

5. Deco X20(US)_V4_1.1.0 Build 20230517 19 May 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

6. Deco X20(US)_V4_1.0.5 Build 20230325 5 May 2023

   Release notes — disclosure 0.34

   New Features/Enhancements: 1. Optimized the Homeshield. 2. Improved system stability.

   Archived page, fetched 29 September 2026

7. Deco X20(US)_V4_1.0.4 Build 20230303 7 April 2023

   Release notes — disclosure 0.57

   New Features/Enhancements: 1. Optimized web protection function. 2. Optimized Ethernet backhaul function. 3. Optimized the network optimization function. 4. Optimized the client list function. 5. Optimized compatibility between Deco and some Samsung devices. 6. Improved system stability. Bug fixes: 1. Fixed the bug that Deco App still pushes weekly/monthly reports in AP mode. 2. Fix the bug that IPTV does not work properly under some ISP lines. 3. Fixed the bug that ISP does not assign IP address to Deco under some ISP lines. 4. Fix the bug that address reservation does not take effect in some cases.

   Archived page, fetched 29 September 2026

8. Deco X20(US)_V4_1.0.1_ 20211224 21 January 2022

   Release notes — disclosure 0.34

   Modifications and Bug fixes: 1. Improved QoS feature. 2. Improved overall stability.

   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 X20

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

Machine-readable: JSON · RSS