Thanks for trying MonoBrick. I think that you might be mixing MonoBrick firmware with MonoBrick communication library.
- MonoBrick communication library is a library written in C# that let’s you remote control the EV3 using the standard firmware
- MonoBrick firmware is a firmware replacement that let’s you execute .Net/C# programs on the EV3 brick
To remote control a EV3 running the MonoBrick firmware you can not use the MonoBrick communication library as it only works with the standard firmware. To establish a connection from a PC to the EV3 running the MonoBrick firmware you simply need to have a program running on the EV3 that accepts a TCP/IP connection and then have the PC establish a connection. Use google to find one of the many tutorial on how to do this in C#…