Hi @lpbouchard thanks for trying K2!
When a Check produces a failure/alert, you can click that item and select "I've fixed it. Recheck now".
With that said, we do not have a user accessible way to manually refresh all the data for a device in Inventory. In general, the data in inventory should refresh every 2 - 3 hours when a device is online.
This has been a hot topic recently (2 others have asked for this in the last 72 hours) so we are looking into the best way to provide this functionality.
Can you explain what data you were looking to refresh about a device specifically?