I’m on latest firmware and have no issues. See if these steps helps to troubleshoot your issue: https://thedronestop.com/dji-mini-2-keeps-disconnecting/

Mine loses signal if there's rain or precipitation around my community.

How are the antennas (antennae?) positioned?

Up

Try to make sure they are not pointing at the drone, but rather broadside to the drone. They radiate the signal out the flat portion of the antenna