Originally Posted by zrs70
An SWU should certainly work. Miles should work as well. You may have gotten bad information. But then again, my info may be out of date as well.
Whose ticket stock is the ticket on, and what is the segment?
Any paid segment with LH (nr. + metal) is upgradeable unless it is booked in W or S intercontinental and two other classes (L and T AFAIR) for Europeen travel.