Main TX/RX Antenna Consideration for RF cable : Module RM520N-GL with 5G M2 EVB Board

I am using RF cable to connect the 5G RM520N-GL with network. But for this I want one antenna that would work for me with better signal signal strength. So which antenna, 0 1 2 3. Kindly direct me on this issue.

Dear @danyal_khattak
As mentioned as below, different antennas has different definition. It is not recommended to use only one.

I can see that RM520N GL doesnot work well with 5GM2EVB board. Do i have to update the firmware? When i use RMU500 EVB it works fine but not on the other.

Kindly send me the latest firmware for RM520N GL.

Dear @danyal_khattak
Please share your current firmware of RM520N.

RM520N can work with M2EVB,I will share user guide to you, please check.