Guide_3DS/_pages/en_US/include/nand-backup.txt

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1. Press (Home) to bring up the action menu
1. Select "Scripts..."
1. Select "GM9Megascript"
1. Select "Backup Options"
1. Select "SysNAND Backup"
1. Press (A) to confirm
+ This process will take some time
+ If you get an error, look for your issue in the [troubleshooting guide](troubleshooting#finalizing-setup)
1. Press (A) to continue
1. Press (B) to return to the main menu
1. Select "Exit"
1. Press (A) to relock write permissions if prompted
1. Navigate to `[S:] SYSNAND VIRTUAL`
1. Press (A) on `essential.exefs` to select it
1. Select "Copy to 0:/gm9/out"
+ If you see "Destination already exists", press (A) on "Overwrite file(s)"
1. Press (A) to continue
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1. Hold (R) and press (Start) at the same time to power off your console
1. Insert your SD card into your computer
1. Copy `<date>_<serialnumber>_sysnand_##.bin`, `<date>_<serialnumber>_sysnand_##.bin.sha`, and `essential.exefs` from the `/gm9/out/` folder on your SD card to a safe location on your computer
+ Copy these backups to multiple locations (such as online file storage, an external hard drive, etc.)
+ These backups will save you from a brick and/or help you recover files from the NAND image if anything goes wrong in the future
1. Delete `<date>_<serialnumber>_sysnand_##.bin` and `<date>_<serialnumber>_sysnand_##.bin.sha` from the `/gm9/out/` folder on your SD card after copying it
+ The other backup files are negligible in size and may be kept on your SD card for ease of access
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1. Reinsert your SD card into your console