You must be running Luma3DS v7.2 or newer.
Download RS3DS-Beta1.zip under Assets and open it up, then copy RS3DS-Patcher.firm to sd:/luma/payloads.
Be sure that you enable game patching in the Luma3DS settings menu (hold Select on boot).
Insert your game cartridge, or if you have a Japanese 3DS you can also purchase a digital copy from the eShop.
Restart your 3DS while holding Start and choose RS3DS-Patcher from the menu.
If you’re somehow in GodMode9, you did something wrong. Repeat step 5 until you’re in the patcher.
Press A to install the patch.
Press any button to reboot.
Play Rocket Slime 3DS!
- Change log: