No. Use RKDumper or Android Tool to create a backup.How do you go about backing up the nand on the Flashback,you need Clockworkmod recovery to copy the whole nand don't you cos its Android and this don't have it so you can only copy parts of the system you are going to change and push it to your PC using adb..?
Use either one to determine the size of the nand. either 2 or 4GB
Here is copy of the info you are looking for.