See now, the date or the version of the Launcher.dat file isn't the same as the version of your EmuNand. EmuNand is literally an emulated Nand, this means when you see the dragon logo of gateway and the home screen appears, you're now in a separate Nand, like a Virtual Machine on PC. So you have to get into the settings of your emunand and at the bottom right of the screen you'll see a number. If that number starts with GW this means you're in the gateway emunand and the number after that is your firmware version.
This system was built so you could update your emunand but keep your sysnand un-updated so you would have an entry point for the hack on the sysnand but play online games on emunand. If you've never updated your emunand, it's probably the same version with your sysnand and that since that version is so old, this MIGHT be the cause of your problem.(I'm no way a pro on 3DS, this is just a guess.) However, DO NOT UPDATE YOUR EMUNAND FROM SETTINGS since gateway only supports emunand up to 11.2 and if you update today it's gonna update to 11.4 and you'll have a black screen until gateway DECIDES to update their launcher.dat file.
There are other ways to update Gateway Emunand to 11.2 without having to update it to the latest 11.4. But as I said, I don't know if this is the source of your problem. You may also want to check out Luma CFW, I'm considering switching to it since it seems a lot easier compared to Gateway.
My advice, write your Emunand Firmware here(GW XX.XX) and maybe other people will try and guess the source of your problem.
Ok! Now I understand better! Thank you! The weird thing is, when the Dragon appears and I go to see the version and I don't see the "GW" in front. Or maybe I'm looking in the wrong place? Where exactly is this "settings of your emunand" 'cause I see the bottom right but with no "GW" before the number...