Keeping your system up-to-date

This page documents how you can keep your system up-to-date.

After following our guide, your system will consist of three core elements that can be updated. Atmosphere, Hekate and your system firmware.

Updating Atmosphere

When updating Atmosphere always make sure to read the release notes. They may list important changes and modifications to your system.

Manual method: SD card

When a new version of Atmosphere releases, you can always update Atmosphere by following these steps:

  1. Turn off your Nintendo Switch and plug your SD card in your computer.
  2. Back up reboot_payload.bin from the atmosphere folder of your SD card to your computer.
  3. Download the latest release of Atmosphere (Download the atmosphere-(version).zip release of Atmosphere.)
  4. Copy the contents of the Atmosphere .zip file to the root of your SD card.
    • If you are prompted to overwrite files, do so, except for the .ini files.
    • If you do accidentally overwrite the .ini files, this is not an emergency but you will lose any changes you made to Atmospheres settings.
  5. Place your copy of reboot_payload.bin in the atmosphere folder. If you are prompted to overwrite files, do so.
  6. Put your SD card back in your Switch and launch CFW.

Automated method: atmosphere-updater

It is also possible to update Atmosphere and Hekate through a homebrew utility called atmosphere-updater. This utility should be installed if you followed our guide.

If you did not install this utility, you can download it from here or from the homebrew appstore.

Updating your Atmosphere and Hekate installation using atmosphere-updater:

  • Always update Atmosphere and Hekate together when using atmosphere-updater! Otherwise your reboot_payload.bin will not correctly be preserved.
  1. Open the Homebrew menu
  2. Open Atmosphere-Updater.
  3. Select Update Hekate (for hekate / kosmos users).
  4. Press A when prompted.
  5. When asked to update AMS and hekate, press A.
  6. When asked to overwrite Atmosphere ini files, press B.
  7. Wait for it to complete.
  8. Select Reboot (reboot to payload).
  9. Press A.
  10. You can now select your launch option in Hekate.

Updating Hekate

When updating Hekate always make sure to read the release notes. They may list important changes and modifications to your system.

Manual method: SD card

When a new version of Hekate releases, you can always update by following these steps:

  1. Turn off your Nintendo Switch and plug your SD card in your computer.
  2. Download the latest version of Hekate (Download the hekate_ctcaer_(version).zip release of hekate).
  3. Copy Hekate's .bin file from the Hekate .zip file to the bootloader folder on your SD card.
  4. Rename Hekate's .bin file to update.bin (if you already have an update.bin, remove the old one.)
  5. Put your SD card back in your Switch and launch CFW.

Automated method: atmosphere-updater

It is also possible to update Atmosphere and Hekate through a homebrew utility called atmosphere-updater. This utility should be installed if you followed our guide.

If you did not install this utility, you can download it from here or from the homebrew appstore.

Updating your Atmosphere and Hekate installation using atmosphere-updater:

  • Always update Atmosphere and Hekate together when using atmosphere-updater! Otherwise your reboot_payload.bin will not correctly be preserved.
  1. Open the Homebrew menu
  2. Open Atmosphere-Updater.
  3. Select Update Hekate (for hekate / kosmos users).
  4. Press A when prompted.
  5. When asked to update AMS and hekate, press A.
  6. When asked to overwrite Atmosphere ini files, press B.
  7. Wait for it to complete.
  8. Select Reboot (reboot to payload).
  9. Press A.
  10. You can now select your launch option in Hekate.

Updating your firmware

Always check before updating your system firmware if the latest version of Atmosphere as well as the latest version of Hekate support the firmware version you are updating towards.

Currently the latest version supported by Atmosphere and Hekate are: 9.0.1.

In addition, updating to or past some firmwares update the gamecard firmware. Reference the table below for information about these.

Updating from Updating towards Updates gamecard firmware
Below 4.0.0 Below 4.0.0 No
Below 4.0.0 4.0.0 or above Yes
On or above 4.0.0, but below 9.0.0 At least 4.1.0 but below 9.0.0 No
On or above 4.0.0, but below 9.0.0 9.0.0 or above Yes
On or above 9.0.0, but below 9.1.0 Latest supported Atmosphere & Hekate revision No

Firmware 9.1.0

This firmware is not supported by the current latest Hekate and Atmosphere. Do not update to it until further notice.

If at least one of the versions you are updating towards also updates the gamecard firmware, you will not be able to downgrade below that version without making the gamecard slot unusable until you update.

Atmosphere (and Hekate) come bundled with patches that automatically disable the gamecard slot if it is detected that the system has an older gamecard firmware that would be updated. If you boot into RCM on each boot (for example by using AutoRCM), this means that the gamecard slot will not be updated and you can downgrade below that version. If this happens, you will not be able to use the gamecard slot as long as you are on the newer firmware.

Otherwise, you can safely update your system firmware through the system settings.

About emuMMC

sysMMC and emuMMC have separate system firmwares and need to be updated separately.

If you keep your emuMMC offline, you will have to use a gamecard to update your system firmware, synchronize it with another Nintendo Switch or dump an updated firmware from your sysMMC.

Updating emuMMC by dumping an updated firmware from your sysMMC

Do you have an eMMC backup yet?

Please do not start this guide without doing a RAW GPP and a BOOT 0/1 eMMC backup!

You can learn how to make one here.

Downgrading

This guide is made for updating your emuMMC. It is not for downgrading. Downgrading at all, sysMMC or emuMMC, is not recommended and not worth it. Downgrading is also very dangerous and can lead to serious complications even when performed correctly.

What you will need

ChoiDujourNX is not the same as ChoiDujour. Please make sure you download ChoiDujourNX!

Preparing your SD card

  1. Insert your microSD card into your computer.
  2. Make a folder inside your switch folder called system updates.
  3. Download RCMFirmwareDumper.bin and place it somewhere on your PC (A good idea is to put it where you keep all your switch payloads like Hekate).
  4. Copy ChoiDujourNX.nro to /switch/system updates from the ChoiDujourNX.zip file.
  5. Update Atmosphere and Hekate by using the above guides.
  6. If you haven't already, update the sysMMC to the latest firmware.

Dumping your sysMMC firmware

  1. Make sure your sysMMC is up to date. If your sysMMC is not up-to-date, update it through the System Settings.
  2. Inject RCMFirmwareDumper.bin using TegraRCMGUI (Like you would with Hekate).
  3. Using the volume and power buttons, select Dump Firmware.
  4. Wait about 1-2 minutes for the tool to dump your firmware.
  5. When the tool finishes, press any volume button.
  6. Select Reboot to Hekate (if this is not an available option, select Reboot to RCM and reinject Hekate) using the volume and power buttons.

Updating your emuMMC with ChoiDujourNX

  1. In Hekate go to Launch -> Atmosphere FSS0 Emu.
  2. Once booted, hold R while launching a game to boot into the homebrew launcher.
  3. Navigate to the system updates folder where you should see ChoiDujourNX, launch it.
  4. Once in ChoiDujourNX, navigate to Firmware/(firmware version number). In that folder you should see a large number of .nca files.
  5. Tap on Choose in the bottom right hand corner of the screen.
  6. When given the option, select your firmware that you have just dumped. If it is available, choose the update with (Exfat).
  7. Tap Select firmware in the bottom right hand corner of the screen.
  8. Tap Start installation.
  9. Wait until ChoiDujourNX completes installing the dumped firmware.
  10. Once it completes, it will ask you if it can reboot. Tap Reboot.
  11. Once rebooted, launch into emuMMC and verify your system works. You can verify your system has been properly updated in Settings -> System on your emuMMC.