@Pankajuuuuu The newest firmware version on the India webpage is 1.1.28. Like I mentioned earlier, downgrading from version 1.2.1 to version 1.1.28 is not supported. This is the reason why it fails....

Pankajuuuuu wrote @woozle, the most recent firmware version for the US model is v1.8. @Pankajuuuuu Could you please provide a link to this firmware?

@Pankajuuuuu Hi, The firmware for the Archer AX12 V1 should be identical for all regions. If you have downloaded a "US" version of firmware 1.2.1, then you should be able to install it. You could...

@Brian99 Google's search results only show me phase couplers suited for Homeplug Powerline that have connections for three phases. I don't know why that is.

@Brian99 Hi, I don't know what kind of circuitry is used to make 2 x 110 V from 220 V, as this does not exist where I live, but in countries that utilize real three-phase electricity so-called "phase...

@TysonKO If you only get a maximum of 500 Mbps, then either your computer is some distance away from the eero router, like in another room, or the 5 GHz Wi-Fi of the eero router is not operating at...