Keenetic KN-3911 (Challenger SE): OpenWrt Compatibility Report
The Keenetic KN-3911 (Challenger SE) runs OpenWrt 25.12.5 on the mediatek/filogic target, and has been supported since 24.10.1. Its WiFi 6 (AX) wireless on the mt76 driver rates excellent for open-source driver support (0.95/1.0), installation is rated moderate, and it is still sold new.
Hardware data and retail listings last checked .
Where to buy
- Techinn (TradeInn) Keenetic Challenger SE router, $108.49, in stock $108
- PcComponentes P/N KN-3911, EUR 123.37, add-to-cart live
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Specifications
| SoC | MediaTek MT7981B |
|---|---|
| CPU | 2 cores @ 1300 MHz |
| RAM | 512 MB |
| Flash | 128 MB (NAND) |
| Ethernet ports | 2 (2.5G) |
| WiFi generation | WiFi 6 (AX) |
| Radios | 2.4GHz: b/g/n/ax · 5GHz: a/n/ac/ax |
| WLAN hardware | MediaTek MT7981B, MediaTek MT7976CN |
| WLAN driver | mt76 |
| OpenWrt target | mediatek / filogic |
| Package architecture | aarch64_cortex-a53 |
| Current release | 25.12.5 |
| Supported since | 24.10.1 |
| Install method | see git-commit |
| Install difficulty | moderate |
| Power supply | 12 VDC, 1.5A via barrel |
| Device type | Repeater |
| Estimated throughput | 650 Mbps |
| Availability | available |
Installing OpenWrt on the KN-3911 (Challenger SE)
Installation on this device is rated moderate. Expect to use a recovery mode, TFTP or a vendor tool rather than a plain web upload. Documented methods: see git-commit.
Flashing third-party firmware can brick a router and usually voids the warranty. Always check that the firmware image matches your exact hardware version.
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