Guide-WiiU/nand-backup.md

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

?> The Wii U NAND is (depending on your model) either 8 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 NAND. 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 most types of bricks.

?> Restoring a NAND Backup on the Wii U requires additional hardware and micro soldering 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.

1. Navigate through the Homebrew Launcher and launch the Wii U NAND Dumper app.
2. Use the Wii U Gamepad's DPAD to enter the following configuration:

• Dump SLC: yes
• Dump SLCCMPT: yes
• Dump MLC: optional
• Dump OTP: yes
• Dump SEEPROM: yes

1. Press the A button to start the dumping process.
2. When the process completed, power off your Wii U, take your SD Card out of the Wii U and plug it into your PC.
3. 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 your computer.
4. Delete the files from your SD Card to free up space.