What is the importance of ‘v’ in REINTALLMODE?
msiexec /i test.msi REINSTALLMODE=vomus REINSTALL=ALL
The important part is the "v" in the reinstall mode settings. It forces the use of the new msi
file instead of the cached copy.
If you are upgrading a package with same product code and different package code(ofcurse) use ‘v’ inorder to recache the new msi.