Now? Not much, online play is gone, unless you want to use the eShop to install game updates and/ or re-DL your purchased games. As for Pretendo, not sure if it requires the latest sys fw to operate or not, if it is then that's def another reason to update.Is there any reason to keep updating your system by this point?
Not "interfere" with anything on your preexisting homebrewed 3ds, but it made it significantly hard for non-homebrewed 3ds's to install cfw, in comparison to how it was.I remember when NIntendo releasing their final update for the 3DS and the update was suppose to interfere with homebrew or something. Was it any validity to that?