This tutorial was made to help guide you through the installation of Custom Themes with Themely by @erman1337. As of Themely version 1.4.0, there are now 2 ways to download themes. It doesn't really matter which method you use, as they both accomplish the same task. Download Themely from here. (It is recommended to use the CIA version.) Take your SD Card out of your 3DS/2DS and put it in your computer/Mac. Downloading Themes - Method 1 Go to 3DSThem.es or Theme Plaza, find a theme you like, and download it. Drag the ZIP file you just downloaded to the Themes folder on your SD Card. (With Themely, it is unnecessary to extract the data from the ZIP file.) Drag the Themely CIA to the CIAs folder on your SD Card. Take your SD Card out of your computer and put it back in your 3DS/2DS. Turn on your 3DS/2DS and install the Themely CIA using your favorite CIA installer. Start Themely (It may black screen the first time you start it. If it does, force the 3DS/2DS to shut down by holding the Power Button and try again) Downloading Themes - Method 2 Tap the icon in the upper-right corner of the touch screen and wait for Themely to download the theme list. You should now be browsing recently uploaded themes on 3DSThem.es. Either find a theme you like in the list, tap the icon to change between Recent themes, Hot themes, or Most Downloaded themes, or tap the search bar above to search for a specific theme. Press the A button to download the selected theme. Tap the icon to go back to the theme list. Find the theme you downloaded in the list. (If there is only one theme in your Themes folder, there will not be a list.) Press the A Button to install the theme. (Hold R and press the A Button to install the theme without BGM.) Press Start to exit Themely and press the HOME Button to go to the HOME Menu. You should now see the Custom Theme you installed on your HOME Menu. You now have Custom Themes. To install a new theme, download a new theme from 3DSThem.es or Theme Plaza and install it using Themely. If Themely isn't working for you, you can either post about your issue here or try CHMM2 by @Rinnegatamante. (CHMM2 is no longer receiving updates, therefore it is very broken and not recommended.) If you have a feature suggestion for Themely, you can post it here. As of version 1.4.0, Themely supports integrated 3DSThem.es browsing. This means that it is possible to download themes directly from the app. As of version 1.2.0, Themely supports theme shuffling. Themely will check for updates when launched. If there is an update, Themely should download it.