Did you check compatibility list of MR3420 on their website? Your modems are in that list?

So...what's the current wireless coverage of WR1043ND and what's your expected range? Tried different channels?

You can try different channels like 1, 6 or 11 and try channel width 20MHz. Without data transfer, your Wi-Fi connection is working OK?

“, I need to use one of the plugs with the ethernet adaptor, not wifi. However, the "ethernet" icon does not light up in either plug and thus I am still not able to connect to the internet from my...

I see. But my ISP doesn't allow me to do that. I mean if I set up a PPPoE connection, I cannot do it on modem itself and vice versa. To select a correct ISP matters...How do you think? :rolleyes:

acepnoor wrote I have the same problem for this unit, hoping get more solution Upgrade the latest firmware first. :)