Follow this workflow to build a custom theme using a combination of image editors and an R4 theme creator tool. Step 1: Source Your Artwork
What is your R4 card running (e.g., Wood R4, YSMenu, original R4)?
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Usually represented by a film reel or music note.
Before editing files, you must understand how the R4 kernel reads visual assets. Most standard R4 cards (including the classic R4, R4i Gold, and Wood R4 clones) utilize a specific set of bitmap ( .bmp ) images. Follow this workflow to build a custom theme
The Nintendo DS hardware has strict graphical limitations. If your image files do not meet these exact specifications, the R4 card will either glitch, display corrupted colors, or freeze on boot:
: This happens when the R4 kernel cannot parse the color profile of the BMP file. Re-export the image from your photo editor, ensuring it is saved as a standard Windows BMP without advanced color space parameters or color space signaling color profiles embedded. This link or copies made by others cannot be deleted
Safely eject the MicroSD card, insert it back into the R4 card, and boot up your console.
Click on individual text properties (e.g., File Name Text , Folder Text , Selected Item Link ).