Guide-WiiU/docs/aroma/nand-backup.md
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Making a NAND Backup

In case anything should go wrong in the later process and your Wii U ends up bricked, restoring a previously made NAND backup can fix it.

Instructions

::: tip

The Wii U MLC is (depending on your model) either 8GB or 32GB. As a result of this, to create a full backup of your console's NAND, your SD Card has to be larger than the size of your MLC. If you do not have a large enough SD Card, you can skip the optional MLC section which includes save files and game data and is not needed to recover any type of brick.

:::

::: tip

Restoring a NAND Backup on the Wii U requires ISFShax or additional hardware and microsoldering skills.

However, making a NAND Backup is always useful, so please do not skip it.

Your NAND Backup is unique to your system. Backups from other consoles won't work without the required knowledge.

:::

  1. Navigate to nanddumper using the GamePad and press A to launch it.
  2. Use the Wii U GamePad's D-Pad to enter the following configuration: SLC: Yes, SLCCMPT: Yes, MLC: Yes or No, OTP: Yes, SEEPROM: Yes
    • MLC is OPTIONAL, if you do not want to dump it, leave it on No. If you do want to dump it, make sure you have a SD Card big enough for it and put it on Yes.
  3. Press the A button to start the dumping process.
  4. When the process is completed, power off your Wii U, take your SD Card out of the Wii U and plug it into your PC.
  5. To make sure you don't lose the files, copy the slc.bin, slccmpt.bin, seeprom.bin, otp.bin (and if you chose to go with a full backup, every mlc.bin.part file) to somewhere safe (Documents, Google Drive, OneDrive, etc.) on your computer.
    • They will appear on the root of the SD Card.
  6. Delete the files you just copied from your SD Card to free up space.