Hi,
I recently (Mar 2026) bought a WavLink AC600 Outdoor WiFi Router (aka WLWN570HA1), but had trouble with the latest firmware (25.12.0, also 24.10.5 and all others) activating the 5GHz WiFi radio.
The label indicates HW rev D, and installing the expected mt76x0 driver & support libs did not activate the 5G radio, in fact there was no evidence in the dmesg of it even being detected.
After a protracted conversation with Google Gemini (surprisingly useful for diagnosis, perhaps less so for a solution), we concluded that the new Rev D HW replaces the MT7610E 5G radio with an MT7663E one (vid:did 14c3:7663). This is supported with the mt7615 driver and mt7663 firmware packages. Installing these resulted in the radio being detected and activated.
However, I cannot get it to connect to anything the max power is stuck at 3dBm, which Gemini suggests is a problem with the EEPROM map. It directed me to dump the contents of the "firmware" partition into a file and rename it to see if the driver would load it from a file but concluded that the driver must have been compiled with DTM EEPROM only (no external file load possible). I don't know how much of this is true.
Also the kernel log (and the Overview display) report the 5G radio as an MT7613BE.
I've been using OpenWRT for many years and Linux since 1995 so I'm fairly familiar.
Hope to get some insight into this, thanks.
Edited to add: It looks like the hardware matches the HA2 device, except retaining the 8MB of Flash. So what I really need is a build of the HA2 firmware in an 8M Flash partition image, if it will fit.