Original tutorial was made by 南春香 (Haruka) from Duowan. This will help you make "official" cia theme pack for your region with any themes you want. 1. Download packages for your region: Hidden Content: **Hidden Content: You must click 'Like' before you can see the hidden data contained here.** CIA themes are always region locked, so you can't use out of region themes, use CHMM or Themely instead. If you're using CFW (NOT Gateway), you can also try Howling Theme Tool. Make note that JPN region has six different packages, so if you wanna have themes from all of them - you'll need to create and install six cia (don't worry, they won't replace each other). EUR region has three packages and USA has two packs. 2. Open .xls or .htm file - you will see list of all themes and command line next to each theme. 3. Now you will need to edit make_CIA_x64.bat (or make_CIA_x86.bat, depending on your system): choose any theme you want from the themes' list, then copy and paste it's command line to the end of .bat file. Repeat for all themes you need. 4. Save .bat file and double click on it. You should get .cia file. 5. Install it on your 3DS and enjoy Theme Shuffle feature. Example. .bat file should be something like this (the first line after "dlc" word, which looks like "-i t/00000xxx.dec:0x0000:0x00000xxx" - command line for header file - do not touch it or you'll get black icons): Code: _makerom -f cia -o Theme_name.cia -ckeyid 0 -major 0 -minor 19 -micro 0 -DSaveSize=0 -dlc -i t/00000086.dec:0x0000:0x00000086 -i t/0000003d.dec:0x0037:0x0000003d -i t/00000060.dec:0x0056:0x00000060 -i t/00000085.dec:0x0075:0x00000085 False errors. Don't worry if you see these two lines, it's normal, it just tells you that your cia won't be encrypted, so it won't be "legit": Code: [CIA WARNING] Common Key could not be loaded, CIA will not be encrypted [NCCH ERROR] Failed to load ncch aes key I tried to make this as much easy as it possible. Feel free to ask if you have any troubles. Also, Nintendo change themes' Content ID from time to time, so there will be updates for those packages. If you want to take a look at theme previews, you can use these links (under spoiler). Spoiler: Preview Catalogs EUR1, EUR2, EUR3 USA1, USA2 JPN1, JPN2, JPN3, JPN4, JPN5, JPN6 Important Note: Since Custom Home Menu Manager supports theme shuffling now, I recommend you to use for themes that homebrew app (or a new one, Themely). It is way better than this method: it allows you to install out of region and custom themes, you can keep on your SD card as many themes as you wish (not only 100), and themes cannot be deleted by eShop as cia ones. Users of various Custom Firmwares (but not GW users) can also create CIA packages with literally any themes (even custom ones, all regions) using Howling Theme Tool.