you said that for an o3ds, updating to 10.3 is safer than remain on 9.9 to do a downgrade, right?
i stupidly updated a week ago my o3ds from 9.8 to 9.9 to play Final Fantasy Explorers... so i think there are games that require 10.3 to play with.
do you know some games, so i could update to 10.3...