- 1) Remove ntrboot cartridge and reinsert
- 2) Ensure magnet position is correct and is putting the console to sleep (on old 2DS: ensure sleep switch is enabled)
- 3) Ensure you are using the correct button combo: (X) + (Start) + (Select) + (Power)
- 4) Ensure that you are holding down the button combo long enough
- 5) Ensure "SafeB9SInstaller.firm" is on the root of your 2DS/3DS own SD/microSD card and renamed to "boot.firm"
- 6) Ensure "boot9strap.firm" and "boot9strap.firm.sha" are in the /boot9strap/ folder of your 2DS/3DS own SD/microSD card
- 7) Ensure the contents of "starter.zip" (Homebrew Starter Kit) have been copied to the root of your 2DS/3DS own SD/microSD card
(When I first used my ntrboot card for the first time, I had not renamed "SafeB9SInstaller.firm" to "boot.firm"... Before I fixed my mistake, it would look like my New 2DS XL system was just powering itself off each time I used the button combo... If this is happening to you, double check everything again!)