I loaded it last week on a G1 unit (SI) and didn't see any problems over a short time of using it. I probably didn't check everything out thorough enough to give a valid opinion other than I can vouch if the unit is updated properly then it won't blow up....LOL Didn't really see any operational benefit other than more contrast adjustability in 2D which was never a problem for me before the update and don't really need to see sunrise/sunset or lunar phases on it...LOL

Note: If you have a copy of the software currently on your unit, you can always try the newer update and revert back