with 16 gb of memory i really do not think there will be a tool made to manage that amount of memory yet
i rhink its
www.mydigit.cn that usually have the latest NAND tool, but as 16gb will be unheard of in the chinese market i can see no one updating the tool for this
i may be wrong, bu also like i said before, for me , once the bad blocks came, it was the beginning of the end for 2 of my players