I say,if anything is working fine,leave it for at least awhile.In my opinion if things works I stay to old firmware.For sure there are pilots who disagree but I fly my I1 with one of the oldest firmware and never had any problems.So I'm no expert to the I 2 but this goes up for ant firmware I believe.
Yes, had issues after upgrade .100 to.300 'sensor error' downgrade was no solution send in AC and Cam it's repaired under warranty , should be getting it back this week