75XX XNAND Recovery

This needs to be done directly on the SBC. Please note that all NBD partitions from the NAND card must be dismounted before attempting to image the NAND on the SBC.

You can find the latest xnand image here. Make sure you decompress the image first before writing.

Backup

Entire Image

nandctl -XR 2048 -z 131072 > /path/to/backup.dd

Kernel

nandctl -XR 4096 -z 512 --seek part1 > /path/to/kernel

Initrd

nandctl -XR 4096 -z 512 --seek part2 > /path/to/initrd

Restore

Entire Image

nandctl -XW 2048 -z 131072 -i /path/to/xnandimg-latest.dd

Kernel

nandctl -XW 4096 -z 512 --seek part1 -i /path/to/kernel

Initrd

nandctl -XW 4096 -z 512 --seek part2 -i /path/to/initrd

Expected Partition Layout

Partition	Contents
1	kernel binary (0xda)
2	initrd (0xda)
3	Debian root filesystem (EXT3)