MR 80 updating issue

Thank you very much! Can this be done wirelessly? I was hoping I could do it in the app and that is the update that I saw! Also does the manual explain the priority on how devices choose to connect to the router or the satellites? I’m just trying to figure out how everything connects! I tried to add another MS80 satellite and it caused a reduction of signal strength to some devices! So I just shut it down! Do you have any suggestions? I was trying to place the 3rd satellite in a window closer to security 3 cameras in my front! Thanks for ur help!! Hope this is not a bother?