Deco X20 v3.6

Actively updated well evidenced

firmware is arriving about as often as it always has

90 days since the last release against a median gap of 90 (1.0x)

Last firmware: 2 July 2026 (3 months ago)
Releases seen: 13
Update rhythm: about every 3 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.

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 v4 (US) Slowing down 8 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

Deco X20(US)_V3.6_1.4.0 Build 20260507 2 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

Deco X20(US)_V3.6_1.2.4 Build 20241227 17 February 2025

Release notes — disclosure 0.56

Bug Fixes: 1. Fixed the issue that connection preferences may fail. 2. Fixed the issue that parental control online time and traffic history may be blank. 3. Fixed the issue that the satellite Decos may display offline when there are some Tapo devices in the network. 4. Fixed the issue that the client cannot obtain IP in some cases. 5. Fixed some other issues.

Archived page, fetched 29 September 2026

Deco X20(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

Deco X20(US)_V3.6_1.2.1 Build 20240723 7 August 2024
Release notes — disclosure 0.35
```
Bug Fixes: 1. Fixed some security vulnerabilities. 2. Fixed the issue of the red light under the Japan V6 Plus network.
```
Archived page, fetched 29 September 2026

Deco X20(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

Deco X20(US)_V3.6_1.1.8 Build 20240119 1 March 2024

Release notes — disclosure 0.48

New features/Enhancements: 1. Supported turning off the wireless network in the management webpage in certain areas. Bug Fixes: 1. Fixed the bug that when replacing the owner for the Deco system, the new owner can't receive notification, causing the replacement to fail. 2. Fixed the potential security vulnerability and its related problem.

Archived page, fetched 29 September 2026

Deco X20(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

Deco X20(US)_V3.6_1.1.4 Build 20230824 8 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

Deco X20(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

Deco X20(US)_V3.6_1.0.9 Build 20230530 5 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

Deco X20(US)_V3.6_1.0.7 Build 20230413 19 May 2023

Release notes — disclosure 0.48

Modifications and Bug fixes: 1. Improved the HomeSield feature. 2. Fixe the issue with MyQ devices not being able to connect to Deco Wi-Fi. 3. Improved Ethernet Backhaul compatibility. 4. Improved wireless stability.

Archived page, fetched 29 September 2026

Deco X20(US)_V3.6_1.0.6 Build 20220909 23 November 2022

Release notes — disclosure 0.49

Improvements: 1. Optimized the HomeShield feature. 2. Improved system reliability and security. Bug fixed: 1. Fixed the bug of not being able to add IPv6 firewall rules.

Archived page, fetched 29 September 2026

Deco X20(US)_V3.6_1.0.2_220606 15 July 2022
Release notes — disclosure 0.23
```
Improvements: 1. Improved system reliability.
```
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 30 September 2026. How these verdicts are computed.

Machine-readable: JSON · RSS