{"slug":"tplink-deco-s4-v3-6-us","display_name":"Deco S4","model_name":"Deco S4","hardware_revision":"v3.6","region_code":"US","category":"mesh_node","vendor":{"slug":"tplink","name":"TP-Link"},"verdict":{"status":"slowing","label":"Slowing down","confidence":"medium","reason":"685 days since the last release against a median gap of 364 (1.9x)","algorithm_version":"lifecycle-1","computed_at":"2026-09-30T01:14:42.061630+00:00","thresholds":{"quiet_days":730,"active_max_days":365,"active_multiple":1.5,"slowing_multiple":3.0,"max_gap_dispersion":1.0,"high_confidence_releases":5,"min_releases_for_cadence":3,"never_updated_min_age_days":365}},"measurements":{"release_count":3,"first_release_date":"2022-11-17","last_release_date":"2024-11-14","days_since_last_release":685,"median_gap_days":364.0,"cadence_multiple":1.882,"observed_support":{"days":728,"is_floor":true,"measured_from":"first_release"},"promise":{"end_date":null,"is_estimated":false,"is_floor":false,"honoured":null,"basis":"no_eol_announcement"},"cve_patch_latency_days":{"median":null,"measurable":false}},"releases":[{"version":"Deco S4(US)_V3.6_1.5.2 Build 20240927","channel":"stable","claimed_release_date":"2024-11-14","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"New features: 1. Support for customizing Satellite Deco's and Clients' signal sources. 2. Support for Reboot Schedule. 3. Support for NO-IP and DynDNS. 4. Support for WPA3. 5. Support for setting Effective Time and Bandwidth Limit for guest network. 6. Support setting up client isolation. 7. Added Smart DHCP switch under Access Point mode. 8. Added connection type of V6 Plus. 9. Added the static route function. 10. Added the ability to customize the MTU. 11. Added IOT network function.","disclosure_score":0.6,"mentions_security":false,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2024/202411/20241114/S7 1.0_S4 3.0_S1900 1.0_en_1.5.2_20240927.zip","evidence":{"id":203401,"source_url":"https://www.tp-link.com/us/support/download/deco-s4/v3.60/","fetched_at":"2026-09-29T03:02:08.637467+00:00","observed_at":"2026-09-29T03:02:08.637467+00:00","http_status":200,"content_sha256":"f3fe6512da141728e8541017dfd3f975059a939e31db69ca879130011b68b603","html":"//firmwarewatch.cc/evidence/203401","raw":"//firmwarewatch.cc/evidence/203401/raw"}},{"version":"Deco S4(US)_V3.6_1.4.1 Build 20230324","channel":"stable","claimed_release_date":"2023-04-23","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"New Features/Enhancements: 1. Optimized the Client List. 2. Improved system stability. Bug fixes: 1. Fixed the bug that other models of Deco cannot be added as satellite Deco in some scenes.","disclosure_score":0.41,"mentions_security":false,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2023/202304/20230423/Deco_S4_3.0_1.4.1_Build_230324.zip","evidence":{"id":203401,"source_url":"https://www.tp-link.com/us/support/download/deco-s4/v3.60/","fetched_at":"2026-09-29T03:02:08.637467+00:00","observed_at":"2026-09-29T03:02:08.637467+00:00","http_status":200,"content_sha256":"f3fe6512da141728e8541017dfd3f975059a939e31db69ca879130011b68b603","html":"//firmwarewatch.cc/evidence/203401","raw":"//firmwarewatch.cc/evidence/203401/raw"}},{"version":"Deco S4(US)_V3.6_1.3.3 Build 20221107","channel":"stable","claimed_release_date":"2022-11-17","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Improvements: 1. Optimized the network optimization function. 2. Optimized the establishment of Ethernet Backhaul feature. Bug fixed: 1. Fixed the bug that Deco couldn't get the IP address in some cases. 2. Fixed the bug that the Client List will be empty in some case. 3. Fixed the bug of not being able to log in to the Deco App in some cases.","disclosure_score":0.53,"mentions_security":false,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2022/202211/20221117/Deco_S4_V3_1.3.3_221107.zip","evidence":{"id":203401,"source_url":"https://www.tp-link.com/us/support/download/deco-s4/v3.60/","fetched_at":"2026-09-29T03:02:08.637467+00:00","observed_at":"2026-09-29T03:02:08.637467+00:00","http_status":200,"content_sha256":"f3fe6512da141728e8541017dfd3f975059a939e31db69ca879130011b68b603","html":"//firmwarewatch.cc/evidence/203401","raw":"//firmwarewatch.cc/evidence/203401/raw"}}],"identifiers":[{"kind":"marketing_name","value":"Deco S4","normalized":"deco s4"}],"revisions":[{"slug":"tplink-deco-s4-v2","hardware_revision":"v2","region_code":"US"},{"slug":"tplink-deco-s4-v2-6-us","hardware_revision":"v2.6","region_code":"US"},{"slug":"tplink-deco-s4-v2-8-us","hardware_revision":"v2.8","region_code":"US"},{"slug":"tplink-deco-s4-v3-26-us","hardware_revision":"v3.26","region_code":"US"},{"slug":"tplink-deco-s4-v3-46-us","hardware_revision":"v3.46","region_code":"US"},{"slug":"tplink-deco-s4-v4-6-us","hardware_revision":"v4.6","region_code":"US"}],"evidence":{"archived_pages":1,"first_observed_at":"2026-08-01T18:37:57.630436+00:00"},"caveats":["observed_support.days is a lower bound: it runs from the first firmware we saw, because no source here publishes launch dates.","Patch latency is not computable for this product: its changelogs name no CVE ids."],"links":{"html":"//firmwarewatch.cc/devices/tplink-deco-s4-v3-6-us","self":"//firmwarewatch.cc/api/v1/products/tplink-deco-s4-v3-6-us.json","vendor":"//firmwarewatch.cc/api/v1/vendors/tplink.json","feed":"//firmwarewatch.cc/feeds/devices/tplink-deco-s4-v3-6-us.xml","methodology":"//firmwarewatch.cc/api/v1/methodology.json"}}