This feature is not working for me. I tried to upgrade from 2.5.1154 to 2.6.1180.
used in a command prompt:
Cameyo.exe -Quiet -UpgradePkg xxx.cameyo.exe
I was expecting to get a new exe file, and got the packager taking a snapshot of my system.
It looks as if a bit got chopped off from the documentation. It should be
"[location]\Packager.exe" -Silent -UpgradePkg "[location]\Cameyo.exe" "[location]\appname.cameyo.exe"
The default location of Packager.exe is %AppData%\VOS\Cameyo\PROG\%Program Files%\CameyoOf course, if you have only one or two packages to upgrade, it may be more convenient to drag Cameyo.exe to the package.