Boot9bin File [updated] (Web Official)

Let’s start with the most direct answer.

A Nintendo 3DS family console running custom firmware (Boot9Strap). An SD card reader for your PC. Step-by-Step Dumping Instructions boot9bin file

This is the quickest method and doesn't require launching any additional homebrew. boot9strap has a built-in feature just for this purpose. Let’s start with the most direct answer