My question is basically this: Is the 3.10 firmware the same for the 1tera byte and 2tera byte models? My Pro Duo was originally a 1TB, which I then modified by taking out both 500GB hard drives and installing 2 1TB drives of my choosing, and doing the whole procedure of upgrading the software (not an easy thing for me). Now when I try to download the firmware (3.10) the serial number in the unit will not work, unless I first select the LS-W1.0TGL/R1 (which is the 1tera byte model). My unit has the 3.09 version now.