G925FXXU2QOI7 Update, Can I install it?

Hello

I'm thinking of installing the latest firmware(G925FXXU2QOI7) on my S6 edge currently running 5.1.1 G925FXXU2POGQ

Now I got a few questions

1. What are the implications of installing this firmware, will my Network connection still work, together with Mobile Data?
2. Is it possible to revert to my current firmware once I have flashed this?
3. Will I get the latest features of the S6 edge+ after flashing this?

Thanks in advance:)