Hi, I have a 3DSXL with a Gateway cart that I haven't updated for about 2.5 - 3 years. I have no idea what to do next, it's been too long. Is there a step by step guide I can follow? I have always had wifi turned off and I've never played an original game so I'm on a pretty old firmware, is it safe to go to the latest firmware yet? Also my battery life pretty much sucks with the current version I'm running, was that something that was fixed? Do I still need to go in to settings / Profile to switch to Gateway mode in the latest version or has that been simplified ? Thanks !