I have a few questions.
1. Is there any reasons to use EmuNAND besides eshop access and classic mode for retail carts?
Streetpass Relays?
2. If a new firmware comes out, won't the eshop detect your EmuNAND is on an old firmware and try to force you to update before you can access it anyway?
Yes
I am just very paranoid about accidentally updating my SysNAND. I don't have the soldering experience to restore it if it messes up.