Dear, I said that we have detected a difference of 3dB less with RSSI and 6dB less with SNR between the verison 2.6.2 and 3.2.1. The SM (Force 180) is at a distance of 10Km
I have read that something similar happened with 3.0, and in 3.1 and should be solved the problem, but in my case seems to continue to happen.
I can't find the thread, but I believe that there were some SnR/signal reporting issues between older and newer versions of the ePMP firmware. There's not an actual signal change, it was just how data is reported.
It’s not a problem, but an old display bug fix. Previous versions of the software combined the pols and sometimes yielded 6 point Mimo gain rather than three. There is no impact on performance and you should be able to find that notation in 3.0 or 3.1 release notes.