to update to LSC V7 you need LSC V6.1.
If you have LSC V6.0, than you need to update to V6.1 first.
Differents update upgrade:
Update is a x.luf file. Only LSC and the online help will be updated. Actually only possible via LSC Help/Update Center.
Upgrade is the same then the LOGO! Soft Comfort Upgrade DVD.
Here everything will be installed. Inluding the new Manuals, CAD-Darwings, .....
Hope this helps