Sorry to resurrect the dead, but I'm wondering about backups too
All Zaurii can do NAND backups to my knowledge, certainly the 760 and 1000 from my experience
Daft question: will making a NAND backup from the Diagnostic Menu save everything, including NAND partitioning information, etc?
Oh, and an observation: you must use FAT16 on the partition that you're saving to. Cards formatted with FAT32 do not appear to be recognised.