@ClementA Sorry, I've google'd myself and couldn't find any method (neither official nor inofficial) to recover from a broken Wi-Fi AP firmware on a TL-WPA4220.

@GeorgeI Hi, Is your question about the "US" version of the RE705X V1 ? The non-US versions of the RE705X V1 already support Ethernet backhaul since firmware version 1.2.10 Build 20250627....

@Corbu Okay, that's fair enough. Just be reminded that in case it were the Intel Wi-Fi cards (or Windows itself) that, for whatever reason, believe you should not be authorized to use the 6 GHz band,...

@Zaphod_B Hi, The hardware version doesn't matter. All "Homeplug AV" adapters should be compatible with each other. Since troubleshooting becomes more difficult when more than two Powerline adapters...

@Corbu These settings really don't matter. Apart from the "6 GHz: Enabled" and the "Hide SSID" options no other settings can make the 6 GHz network intentionally disappear or appear. Considering that...

@Corbu If you don't mind a small effort, could you perhaps run a software called "WifiInfoView" that can be downloaded from www<dot>nirsoft<dot>net? This tool can be run without installation (just...