X88u Merlin dual wan over ethernet causes soft brick

[Wannaspeed]

Hi, I have an Asus RT-AX88U running Merlin 3004.388.4. I have dual Wan enabled over USB which works fine. But I tried to change it to Dual Wan Secondary WAN ethernet 7 and also 8. Both times after settings finished and it rebooted, the lights went dead except for an occasional alternating flash between Power and Network Lan lights. No big Christmas tree lightup like normal, no wireless network, no ethernet connection. No GUI. I tried rebooting several times and same thing. The only thing I could do was hard reset, which brought everything back, but as soon as I attempted dual wan over ethernet again it went dead and had to Hard reset again.

 

[RandomUser777]

Try using only eth1-4 for dual wan.

 

[Wannaspeed]

Try using only eth1-4 for dual wan.

Thanks ill give that a shot.

 

[Honkoponko123]

Thanks ill give that a shot.

Has this worked using port 1-4?

 

[Ilya_]

Works good with eth 4. Using load balancing with 2 different ISP. Seted up Routing rule for 1 ip, it's worked fine but some reboots was needed.