Check your 3DS model and system version
Back up your SD card contents to a computer
Charge the 3DS fully
Use the official 3ds.hacks.guide instructions for your exact model
Prepare the required SD card format and files
Follow the guide’s entry-point method for your firmware
Install boot9strap as instructed
Install the recommended custom firmware setup
Copy the required files to the SD card
Boot the system and verify custom firmware loads
Make a NAND backup and store it safely
Keep the guide bookmarked for updates
Only install homebrew and game backups you legally own
Avoid random video tutorials or outdated guides