I've managed to get a new Eken M001 and after opening it, took these picturesYou can see that the Main Board has changed slightlyThe have put the speaker on the board instead as the back of the deviceAlso kept the wifi module away from the back of the screen and beside the speakerI made also a picture of the back of the CPU board, and you can see there is space for a second ( I think RAM) chipNow if somebody can figure out what chip can go there , we may be able to add some more RAM