I had someone ask me yesterday that if they got 2 different codes activated at different times can they just install the one that comes as Sequence: 2? Or do they have to install the first one and then install the second. Got me to thinking that I had to rebuild one about a year ago and reinstall the codes and all I used was the last Sequence which happen to be 4 and that put all the codes on the unit. But my memory is not what it use to be so I thought that I would ask here.