http://www.tp-link.com/en/download/TL-MR3020_V1.html#Firmware You can download this firmware and try to upgrade it.

What's this firmware? You can go to tp-link website and download the official firmware. Then try to upgrade it. http://www.tp-link.com/en/download/TL-MR3020_V1.html#Firmware

It's a Soho router so maybe it max support 32 devices.If you want more flash and RAM,maybe there will be 3420v3 or other 3G router's.You can check the hardware then.

I think you can go to TP-LINK technical support and ask them if this feature will be added.

TD-8961 seems uable to set bandwidth control for devices.\ The QoS means set priority for different kind of data packets. For example,we can set video or voice with higher priority. You can check the...

I think maybe there's something wrong with your data card.. Because the same data card from your friend works fine. You can try to use it directly on your computer and check if it works.