Apple Configurator can't update IOS 6.1.2

We're using Apple Configurator 1.2.1 to maintain 10 iPads for our school. We've recently updated the iPads to iOS 6.1.2 and when we try to refresh the iPads via Supervise in Configurator we get a warning saying that the iOS cannot be downgraded. After researching this in the Support Communities, we came across an entry suggesting that the iOS has been updated on the iPads but not in Configurator. We confirmed that this, was in fact the case and are attempting to "Check for Update" for the iOS in Configurator. When we click this button in the Configurator, the iOS info changes from 6.1 to 6.1.2 but the iOS isn't actually updated. When we quit the Configurator and start it back up, the version is back to 6.1. The update process, when we click the "Check for Update" button happens real fast so I don't think it's really updating.

Is anybody aware of issues with Configurator and upgrading the version of the iOS? I keep finding references to a .ipsw file for the configurator but I don't know if this is something that I need to add and if so, where can I find this file?