{"slug":"tplink-archer-c20-v5-8-us","display_name":"Archer C20","model_name":"Archer C20","hardware_revision":"v5.8","region_code":"US","category":"router","vendor":{"slug":"tplink","name":"TP-Link"},"verdict":{"status":"slowing","label":"Slowing down","confidence":"medium","reason":"617 days since the last release against a median gap of 266 (2.3x)","algorithm_version":"lifecycle-1","computed_at":"2026-09-30T01:14:39.391421+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":"2023-08-08","last_release_date":"2025-01-21","days_since_last_release":617,"median_gap_days":266.0,"cadence_multiple":2.32,"observed_support":{"days":532,"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":"Archer C20(US)_V5.8_241231","channel":"stable","claimed_release_date":"2025-01-21","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":"Enhance device security.","disclosure_score":0.3,"mentions_security":true,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2025/202501/20250121/Archer_C20v5_0.9.1_4.17_up_boot[241231-rel54986].zip","evidence":{"id":201846,"source_url":"https://www.tp-link.com/us/support/download/archer-c20/v5.80/","fetched_at":"2026-09-29T02:10:49.537609+00:00","observed_at":"2026-09-29T02:10:49.537609+00:00","http_status":200,"content_sha256":"61c1db96cf9a5b0719111990e23d0cd05ae69469e2271e1ebabcab78fad60a0c","html":"//firmwarewatch.cc/evidence/201846","raw":"//firmwarewatch.cc/evidence/201846/raw"}},{"version":"Archer C20(US)_V5.8_230924","channel":"stable","claimed_release_date":"2023-12-01","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":"Modifications: Enhanced device security. Fixed the bug that prevented AX201 network cards from connecting to the 5GHz networks on Windows 11. Fixed the bug that occasionally caused disconnection issues for specific smartphone brands.","disclosure_score":0.44,"mentions_security":true,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2023/202312/20231201/Archer C20(US)_V5_230924.zip","evidence":{"id":201846,"source_url":"https://www.tp-link.com/us/support/download/archer-c20/v5.80/","fetched_at":"2026-09-29T02:10:49.537609+00:00","observed_at":"2026-09-29T02:10:49.537609+00:00","http_status":200,"content_sha256":"61c1db96cf9a5b0719111990e23d0cd05ae69469e2271e1ebabcab78fad60a0c","html":"//firmwarewatch.cc/evidence/201846","raw":"//firmwarewatch.cc/evidence/201846/raw"}},{"version":"Archer C20(US)_V5.8_221028","channel":"stable","claimed_release_date":"2023-08-08","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":"Modifications and Bug Fixes 1. Fixed the bug that the network cannot be automatically restored after PPPoE connection is disconnected; 2. Enhanced PPPoEv6 dial-up compatibility; 3. Fixed the Ping command error after the Router WAN is configured with a static IP address; 4. Update the IPVT profile; 5. Enhance device security.","disclosure_score":0.54,"mentions_security":true,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2023/202308/20230808/Archer C20(US)_V5_221028.zip","evidence":{"id":201846,"source_url":"https://www.tp-link.com/us/support/download/archer-c20/v5.80/","fetched_at":"2026-09-29T02:10:49.537609+00:00","observed_at":"2026-09-29T02:10:49.537609+00:00","http_status":200,"content_sha256":"61c1db96cf9a5b0719111990e23d0cd05ae69469e2271e1ebabcab78fad60a0c","html":"//firmwarewatch.cc/evidence/201846","raw":"//firmwarewatch.cc/evidence/201846/raw"}}],"identifiers":[{"kind":"marketing_name","value":"Archer C20","normalized":"archer c20"}],"revisions":[{"slug":"tplink-archer-c20-v1","hardware_revision":"v1","region_code":""},{"slug":"tplink-archer-c20-v4","hardware_revision":"v4","region_code":"US"},{"slug":"tplink-archer-c20-v5","hardware_revision":"v5","region_code":"US"},{"slug":"tplink-archer-c20-v5-6-cpi","hardware_revision":"v5.6","region_code":"CPI"},{"slug":"tplink-archer-c20-v5-6-us","hardware_revision":"v5.6","region_code":"US"},{"slug":"tplink-archer-c20-v6-46-cpi","hardware_revision":"v6.46","region_code":"CPI"},{"slug":"tplink-archer-c20-v6-6-cpi","hardware_revision":"v6.6","region_code":"CPI"}],"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-archer-c20-v5-8-us","self":"//firmwarewatch.cc/api/v1/products/tplink-archer-c20-v5-8-us.json","vendor":"//firmwarewatch.cc/api/v1/vendors/tplink.json","feed":"//firmwarewatch.cc/feeds/devices/tplink-archer-c20-v5-8-us.xml","methodology":"//firmwarewatch.cc/api/v1/methodology.json"}}