StreetPass Mii Plaza Spotpass ANAでDS puzzle

from camwoodstock:
HOW DO I GET THE ANA PUZZLE? A VERY INFORMAL GUIDE
BEFORE DOING ANYTHING ELSE EVER: You'll need a modded 3DS with Custom Firmware (CFW) for this. If you don't have that, this isn't the place to teach you how, but you can learn more here: 3ds.hacks.guide/

In addition, you'll need FBI (a homebrew app that you should just have by default if you did the homebrew thing above), and some way to put files on your SD card. I use FTPD (off Universal Updater) & FileZilla (on PC), but a good ol' PC and SD Card reader should work.

This was tested on an English, original-model 3DS. So, uh, it should work on basically any English 3DS. Also, of course, use Checkpoint to backup your StreetPass Mii Plaza data. Just in case.

OK THE ACTUAL STEPS NOW, THIS ASSUMING YOU HAVE A MODDED 3DS AND UNDERSTAND ALL THIS
Go here and download your regions (or any) zip file: github.com/DBBDX/Puzzle-Swap-SpotPass-BOSS/releases/tag/BOSS
Extract the ZIP and acquire the file called !!!$r!!!!#!!+s). It shouldn't have any file extension.
Put that file somewhere on your 3DS' SD card via your means of file transfer. Remember to put it in a folder you'll remember.
Open FBI on your 3DS, open the SD Card menu, and navigate to the folder where you saved !!!$r!!!!#!!+s). Press "A" on that bad boy, and hit "Copy".
Okay, now navigate back to the main menu, and this time, select "Ext Save Data". Select "StreetPass Mii Plaza", then select "Browse Spotpass Data".
If all goes according to plan, you're now in the SpotPass data for StreetPass Mii Plaza--you should be seeing a few similarly-named files already (though none exactly like !!!$r!!!!#!!+s), of course!). Select "current directory", and then select "Paste".
Keep going back, and close the FBI program. You're back on the home menu. Open StreetPass Mii Plaza and go to Puzzle Swap. You should have the puzzle now.