Since not many forum members are spelling this out and I noticed a butt-ton of noobs bricking their consoles, I think all N3DS users should stay away from using sysupdater for the moment. Unless KTM or a new version of sysupdater is released which is more safe, you are risking your console when you could just wait 2-3 days. I will update this thread if the general consensus is that N3DS users are safe downgrading. Some people are also claiming that CFW do not work after downgrading, even if they used Steveice10's latest version. Whether this is true or just user error, I still wouldn't take the risk. Please refrain from commenting on this if you successfully downgraded considering you got lucky. If one person jumps off a cliff and doesn't break their legs, it doesn't mean we should encourage children who have no idea how tall the cliff is or how to land to fun right off it. TL;DR - Do not downgrade yet if you are using a N3DS. Wait a day or two at least.