este no copia la nand entera solo la carpeta /dev/fs , es decir el FileSystem, faltarian algunas partes
* Pages 0x40 - 0x89: boot2 (first copy)
* Pages 0x8a - 0x17f: unused (unformatted)
* Pages 0x140 - 0x189 : boot2 (second copy)
* Pages 0x18a - 0x1bf: unused (unformatted)
*
o boot2 is the third-stage bootloader; it is stored in a modified WAD format, including a ticket that is encrypted with the common key and signed.
* Pages 0x1c0 - 0x1ff: ?
* Page 0x200: beginning of per-console unique data
* Pages 0x200-0x3f7ff: Encrypted filesystem data. Data is encrypted with a per-console AES key, and then signed with a (separate, per-console) HMAC key.
* Pages 0x3F800 - 0x40000: Filesystem metadata (SFFS, unencrypted). There are 16 superblocks contained therein -- one every 0x80 pages.
Solo tendriamos la ultima.
Con el de nuvalo se optiene todo, aunque no asi de esta manera pues se saca todo en un archivo.