After much difficulty getting my PC to talk to my new ER707-M2, the first thing I did was update the firmware. To do that I needed to talk to custommer support because my hardware version is 1.2, but the website offers options for only v1 and v1.6. I have subsequently seen that the available firmware works with either, but there's no way to know that from the website, which demanded I pick an incorrect choice. Upon exploring the GUI preparatory to configuring the ER707, I find that there is no port-forwarding option (there is a port-triggering option). I have--reluctantly--returned my ER707-M2.