I just wanted to put the info out that I am using a 16 g memory sd card class 10 ( memorex is the brand of the sd card )and it works fine ,all I did was go to the web site auteltech.com ,first opened up the update program 6.31 then put the formatted sd card in my laptop and down loaded all the updates when done took the card out and put it in the ds-708 and booted it up and all seems good .