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Archer C80 lost ethernet backhaul after upgrading to firmware 1.15.0

Archer C80 lost ethernet backhaul after upgrading to firmware 1.15.0

Archer C80 lost ethernet backhaul after upgrading to firmware 1.15.0
Archer C80 lost ethernet backhaul after upgrading to firmware 1.15.0
2025-12-17 07:13:49 - last edited Wednesday
Tags: #EasyMesh #EasyMesh Ethernet Backhaul
Model: Archer C80  
Hardware Version: V2
Firmware Version: 1.15.0 Build 250729 Rel. 63726n(4555)

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,

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1 Accepted Solution
Re:Archer C80 lost ethernet backhaul after upgrading to firmware 1.15.0-Solution
2 weeks ago - last edited Wednesday

Hi @woozle ,

 

I removed the two RE330 units from the mesh network and unplugged them. I then reset the C80 to factory defaults and connected the LAN cable to a LAN port. After rebooting the main router (AX10), I attempted to add the C80 as a satellite router, but it was not detected.

 

I also tried unplugging the LAN cable and repeating the process, with the same result.

 

Next, I shut down the main router and left it unplugged for a couple of minutes, then repeated the process with the C80. This did not resolve the issue.

 

I then connected a laptop directly to the C80 and accessed the control panel. In this case, the C80 displayed only the message: “Can’t start your router? Upload a new firmware.” I downloaded the firmware Archer C80 (EU) V2.20_1.13.15 Build 240812, uploaded it to the router, and rebooted it. After rebooting, the C80 was automatically added to the mesh network using Ethernet backhaul.

 

I will not attempt to upgrade the firmware to Archer C80 (EU) V2.20_1.14.30 Build 250729. Since the current setup is working, I prefer not to change it.

 

Thanks!

 

 

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Re:Archer C80 lost ethernet backhaul after upgrading to firmware 1.15.0
2025-12-17 13:54:29

  @elrezad 

 

Hi,

 

Just for a test, can you please power off the two RE330 that are currently connected via Ethernet backhaul and then try again to connect the C80 via Ethernet backhaul?

 

I seem to remember another user reporting problems when trying to connect more than two satellite devices via Ethernet backhaul. I can't find the specific post right now.

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Re:Archer C80 lost ethernet backhaul after upgrading to firmware 1.15.0-Solution
2 weeks ago - last edited Wednesday

Hi @woozle ,

 

I removed the two RE330 units from the mesh network and unplugged them. I then reset the C80 to factory defaults and connected the LAN cable to a LAN port. After rebooting the main router (AX10), I attempted to add the C80 as a satellite router, but it was not detected.

 

I also tried unplugging the LAN cable and repeating the process, with the same result.

 

Next, I shut down the main router and left it unplugged for a couple of minutes, then repeated the process with the C80. This did not resolve the issue.

 

I then connected a laptop directly to the C80 and accessed the control panel. In this case, the C80 displayed only the message: “Can’t start your router? Upload a new firmware.” I downloaded the firmware Archer C80 (EU) V2.20_1.13.15 Build 240812, uploaded it to the router, and rebooted it. After rebooting, the C80 was automatically added to the mesh network using Ethernet backhaul.

 

I will not attempt to upgrade the firmware to Archer C80 (EU) V2.20_1.14.30 Build 250729. Since the current setup is working, I prefer not to change it.

 

Thanks!

 

 

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