Haku33 - Clean Switch NAND / Restore Stock OS without Backup

This guide will show you how to use Haku33 by Kronos2308 to delete custom firmware files and logs from your Switch console. This is useful if you wish to “clean” your system, return to the stock firmware and play online without being banned. This method will completely erase the information on your Nintendo Switch’s SysNAND (Internal Storage). Backup your saves with EdiZon. SD files or games installed to your SD (on EmuNAND) will not be touched.

If you plan on running SysNAND and EmuNAND concurrently, it is advised to create your EmuNAND partition prior to cleaning your SysNAND. You will require hekate to boot into stock firmware on the SysNAND, this comes with the added benefit of not burning fuses as long as Auto-RCM is enabled. hekate is safe to use with stock firmware, as it is a bootloader and does not store files on your NAND.

If you do not plan to use EmuNAND and wish to use only the stock Nintendo Switch official firmware, disable Auto-RCM in hekate and allow your Switch to boot as normal.

Like with all homebrew that make large changes to your Switch’s internal storage; it is advised to create a backup of your NAND before running Haku33, just to be on the safe side.

Required Downloads:

Nintendo Switch with Custom Firmware

Switch Payload Injector (Recommended)  

  • USB Dongle that can be used to boot your Switch into Atmosphere without a PC or USB cable
  • RCM Jig Included
  • Compatible with emuMMC / Stock OS Dual Boot for safer online play
  • Add or Update payloads (.bin files) via USB
  • Enter coupon code NOTEGRA for a $5 discount

Installing Haku33

You will be running Haku33 on your SysNAND so temporarily disable any EmuNAND setups if you are using one. This can easily be achieved by temporarily renaming the /emuMMC/ folder on the root of your SD.disable rename emummc folder haku33 sysnand

  1. Copy Haku33.nro to the /switch/ folder on your SD card
  2. Insert your SD card into your Switch and push your preferred payload to boot into CFW
  3. From the Home screen,  launch the Album to access the Homebrew Menuswitch atmosphere album homebrew menu

Cleaning NAND

  1. Launch Haku33 from the Homebrew Menuhaku33 hb menu switch atmosphere clean nand
  2. Press the [ZL] + [ZR] + [+] + [-] buttons together to beginhaku33 switch atmosphere clean nand
  3. Wait for your Nintendo Switch to reset (or enter RCM)

Your NAND has now been cleaned. If Auto-RCM was enabled, your Switch will enter RCM and you will require hekate to boot into stock official firmware. If not, you Switch will boot into the initial setup screenswitch initital setup

Your previous /Nintendo/ folder will be backed up as /Hamburgesa_Nintendo/ on the root of your SDhaku33 restore switch clean nand hamburgesa_nintendo

Now is the best time to create a clean Switch NAND backup with hekate if you do not have one.

Booting into Stock Official Firmware from RCM with hekate

  1. Insert your SD card into your PC
  2. Copy the /bootloader/ folder from the hekate .zip file to the root of your SD cardswitch hekate bootloader sd folder
  3. Extract the Atmosphere .zip file and copy fusee-secondary.bin to the /bootloader/payloads/ folder on your SD cardswitch emunand bootloader payloads atmosphere fusee secondary bin
  4. Go to the /bootloader/ folder on your SD cardswitch emunand bootloader hekate_ipl ini atmosphere fusee secondary bin
  5. Open hekate_ipl.ini in Notepad and add the following lines to the file and save
    [Stock (SYSNAND)]
    fss0=bootloader/payloads/fusee-secondary.bin
    stock=1
    emummc_force_disable=1
    icon=bootloader/res/icon_switch.bmp

    switch emunand hekate_ipl ini atmosphere fusee secondary bin

  6. Insert your SD card into your Switch and push the hekate_ctcaer.bin payloadhekate tegrarcmgui payload send
  7. Select [Launch]switch hekate launch stock
  8. Select [Stock (SYSNAND)] to boot into stock official firmwareswitch hekate launch stock sysnand
  9. Your Switch will boot and load into the initial setup screenswitch initital setup

You can now sign in to your Nintendo Account or create a new one to access the eShop.switch official firmware ofw eshop

You can also update your SysNAND firmware via Nintendo servers, EmuNAND firmware will be unaffected.

Congratulations on successfully cleaning your Switch NAND and restoring the official firmware. You can now enjoy the online services while still having access to custom firmware via the EmuNAND if you wish to do so. Ensure that you keep the SysNAND environment clean and create a fresh NAND backup now if you haven’t already.

Switch Homebrew and Games

Credits