Same problem with my Aqua.
Apparently some people stole the SDHC 4GB Card with the OS and everything and then they sell it using the black market.
If I could find the same device with its memory I would make a binary copy to a similar SDHC 4GB, but I need it to reproduce the information inside. A clone, in simple words. I have the knowledge, the tool, and without the memory, everything is useless.