"Standard Nintendo 3DS ROM," the properties read.
To convert a file, you are essentially extracting the contents of a compressed archive rather than performing a standard file format conversion
If the .7z does contain a 3D model inside, conversion is impossible.
If you search Google for a direct "7z to 3DS converter," you will find scam websites promising magic. Avoid them.
He decided to use the command line. It was faster, cleaner, and left no room for GUI glitches.
“Direct conversion is impossible,” the AI chirped. “Different data types.”