AVM FRITZ!Box 4040: OpenWrt Compatibility Report
The AVM FRITZ!Box 4040 runs OpenWrt 25.12.3 on the ipq40xx/generic target, and has been supported since 18.06.0. Its WiFi 5 (AC) wireless on the ath10k-ct driver rates good for open-source driver support (0.70/1.0), installation is rated moderate, and it is no longer sold new.
Hardware data and retail listings last checked .
Where to buy
We have no current retail listing for the AVM FRITZ!Box 4040, which is no longer sold new. See current alternatives for devices you can still buy today.
Specifications
| SoC | Qualcomm Atheros IPQ4018 |
|---|---|
| CPU | 4 cores @ 716 MHz |
| RAM | 256 MB |
| Flash | 32 MB |
| Ethernet ports | 5 |
| USB | 1x 2.0, 1x 3.0 |
| WiFi generation | WiFi 5 (AC) |
| Radios | 2.4GHz: b/g/n · 5GHz: a/n/ac |
| WLAN hardware | Qualcomm Atheros IPQ4018 |
| WLAN driver | ath10k-ct |
| OpenWrt target | ipq40xx / generic |
| Package architecture | arm_cortex-a7_neon-vfpv4 |
| Current release | 25.12.3 |
| Supported since | 18.06.0 |
| Install method | EVA FTP |
| Install difficulty | moderate |
| Power supply | 12 VDC, 1.5A |
| Device type | Home router |
| Estimated throughput | 501 Mbps |
| Availability | discontinued |
Installing OpenWrt on the FRITZ!Box 4040
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: EVA FTP.
Official OpenWrt device page for the FRITZ!Box 4040
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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