If you do not have a flashcart compatible with ntrboot, choose a different option.
- Ensure you already have a flashcart with ntrboot flashed. If you haven't flashed your flashcart with ntrboot yet, refer to this page.
- Power off the console and insert your SD card into your computer.
- Copy
3ds_hw_test.firm
to the root of your SD card. - Rename
boot.firm
toluma.firm
. - Rename
3ds_hw_test.firm
toboot.firm
. - Reinsert the SD card into your console.
- Insert the flashcart flashed with ntrboot into your console.
- Put the magnet into position to trigger the lid sensor. Refer to this image for reference.
- Note, 2DS users will not need a magnet, as their device cannot physically fold. Instead, move the sleep switch to the right.
- Press and hold START+SELECT+X, then briefly press and hold the power button for 2 to 3 seconds.
- Your console should now be booted into 3ds_hw_test. If it did not boot and instead booted into the HOME menu, power off and try again. This can take a few attempts to get the magnet positioning correct.
- Press any button to start the test.
- The test will take around 30 minutes for an old model and around 45 for a new model.
- If you are unsure what model the console is, look at the shoulder buttons - a new model has four (L+ZL+ZR+R), and an old model has two (L+R
- The test will take around 30 minutes for an old model and around 45 for a new model.
- When the test finishes, press any button to turn the console off and insert your SD into your computer.
- Open the newly generated
sd:/HWTEST.LOG
file in a text editor, then scroll to the end and look at the line that says[ARM11] Done. ___ total errors detected.
.- If the number on this line is 0, your console's RAM is not the issue.
- If the number on this line is not 0, your console's RAM is dying and you need to either repair or replace the motherboard.
- Delete
boot.firm
and renameluma.firm
toboot.firm
.