you only have to buy the upgrade kit + an overlay in the DJTT shop and get a serial cable for the upgrading process. then load a vci mapping from the page and you have a vci se
if you buy a vci from dj techtools it already has the newest firmware (1.3).
it might be useful in the future to have an upgrade kit, given that daveX has coded a firmware 1.3.3 and might do some more work..