Hi, Here is a firmware for the Huawei E3372, you can try to upgrade the router's firmware and check whether it will working. http://support.tp-link.com/f/dceb1b8160/?dl=1 Here is the instruction to...

The TL-MR3020 is not support AT commands function, so via the router, can't access to the modem via AT commands. Hope you could understand.

I'll feedback this inquiry, and thank you for your support to our product . Have a nice day!

Thank you for your information. Enjoy your inetrnet~

Hi, Use the TL-WPA4220KIT for example, you can refer to the link below to find the setup video, UG and QIG. https://www.tp-link.com/en/download/TL-WPA4220KIT.html

Our powerline device which sold on the market are compatible with each other. Because you have the TL-WPA4220KIT, so if you want to buy a wireless extender, I'm suggest the TL-WPA4220. If you just...