Eddie,
For me I can only select one SYS/BIOS. Here I select the first one in the list.
As soon as I check the box beside the 6.33 release the 6.35 one is automatically unselected.
The tool is not supposed to let you select more than one item that is the "same". I am going to have to ping the guy that works on this to see what could be going on to trigger you to be able to select more than one.
John