I was using the C80 as a satellite to expand my Easymesh network with ethernet backhaul (main router: Archer AX10 v1.0, firmware 1.3.12). It was working perfectly.

Yesterday I updated the firmware of two other satellites (RE330) to add ethernet backhaul to both of them. Worked as a charm, thanks for that, TPlink team!

But then I updated C80's firmware to 1.15.0 , and it lost the ethernet backhaul. I tried rebooting, reset to factory settings, removing it from the main router and adding it again... But no luck. The C80 can still work as a easymesh satellite but only with wifi backhaul, which in my case has no use because Wifi doesn't arrive to the C80's location. 

Any ideas or help?

Thanks,