I'm trying to deploy a Custom spooler configuration update to all robots to enable Spooler Storm Protection.
If I drop the package on a single spooler the configuration is updated.
When I create an Infrastructure group either probe or robot and I try to deploy to that group I receive the message; Package not present for the update.

When doing multiple robots updates such as this you get an option to do update only at the bottom of the screen.
If you choose this option the robot must have the exact package name already installed or you will get an error message saying the package is no present.
 

UIM 9.2 and earlier
 

When deploying a new package to robots DO NOT check the update only checkbox.