Deco X20 v1.2
Slowing down reasonably evidenced
updates are coming less often than this product's own history
366 days since the last release against a median gap of 130 (2.8x)
- Last firmware
- 28 September 2025 (1 year ago)
- Releases seen
- 7
- Update rhythm
- about every 4 months
- Support observed
- ≥5 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 v1.26 (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 (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
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Deco X20(US)_V1.20_1.6.1 Build 20250910 28 September 2025
Release notes — disclosure 0.52
New Features/Enhancement: 1. Supported more parental control functions, including SafeSearch, YouTube Restricted, APP Time Limits, Always Allowed APPs, Offtime, etc. 2. Enhanced Web Filter, enriched visited/block history and optimized Blocked APPs for parental control. 3. Enhanced security functions of device. 4. Optimized QoS.
Archived page, fetched 29 September 2026
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Deco X20(US)_V1.20_1.5.3 Build 20231227 4 February 2024
Release notes — disclosure 0.06
Fixed some security vulnerabilities.
Archived page, fetched 29 September 2026
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Deco X20(US)_V1.20_1.5.2 Build 20230908 27 September 2023
Release notes — disclosure 0.06
Modifications and Bug Fixes: Optimized Parental Control feature.
Archived page, fetched 29 September 2026
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Deco X20(US)_V1.20_1.5.1_20210204 11 March 2021
Release notes — disclosure 0.59
Modifications and Bug fixes: 1. Added "allow ping on WAN" switch in Deco app. 2. Added "service name" and "access name" options when using PPPoE WAN connection. 3. Added Network Optimization feature. 4. Added owner account transfer feature. 5. Supported manually selecting IPTV port on satellite Deco. 6. Supported manually adding sites into Antivirus white list. 7. Added UPNP switch in Deco app. 8. Added guest network isolation switch in Access Point Mode. 9. Fixed the Bug that clients might not be able to get IP addresses when there are several address reservation entries in Deco app.
Archived page, fetched 29 September 2026
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Deco X20(US)_V1.2_201013 2 November 2020
Release notes — disclosure 0.53
Modifications and Bug Fixes: 1. Added the option to change the Wi-Fi encryption type. 2. Optimized the QoS feature. 3. Fixed the bug that iphone might lose internet connection intermittently. 4. Fixed the bug that the Mail service cannot connect to IMAP Servers correctly on Mac OS.
Archived page, fetched 29 September 2026
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Deco X20(US)_V1.2_200630 13 August 2020
Release notes — disclosure 0.11
New features/Enhancements: 1. Improved overall stability.
Archived page, fetched 29 September 2026
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Deco X20(US)_V1.2_200607 29 June 2020
Release notes — disclosure 0.36
First firmware release. For Deco X20 (US) V1.2
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.