[wix-users] How to upgrade?

[Racheli Ganon]

Hi,
I implemented a simple wix installer.
I tested the upgrade scenario and it worked as expected.

Now I want to tp perform the upgrade via the command line,

msiexec /i <path_to _msi> works as expected as well
msiexec* /u* <path_to _msi> doesn't work at all. it's not triggering the ui
and the event viewer doesn't display any message/event.
So I have two questions:
Is it possible to perform an upgrade using the */u* parameter?
Is it majorUpgrade wissue or a wix issue?
Thanks!