Abstract: Methods and apparatus for updating data for printing devices are provided. A device state management system (DSMS) can send probe messages to printing devices. The DSMS can receive responses to the probe messages, where the number of probe messages can exceed the number of responses. After receiving the responses, a number of unconfirmed printing devices can be determined based on data stored in a device database (DDB) associated with the DSMS. The DSMS can determine a system-instability value associated with the number of unconfirmed printing devices. The DSMS can determine whether the system-instability value exceeds a threshold. After determining that the system-instability value exceeds the threshold, the DSMS can: determine address clusters associated with the unconfirmed printing devices; send probe messages to addresses within at least one address cluster; receive responses to the probe messages; and update the DDB using data in the responses.

Abstract: Methods and apparatus for updating data for printing devices are provided. A device state management system (DSMS) can send probe messages to printing devices. The DSMS can receive responses to the probe messages, where the number of probe messages can exceed the number of responses. After receiving the responses, a number of unconfirmed printing devices can be determined based on data stored in a device database (DDB) associated with the DSMS. The DSMS can determine a system-instability value associated with the number of unconfirmed printing devices. The DSMS can determine whether the system-instability value exceeds a threshold. After determining that the system-instability value exceeds the threshold, the DSMS can: determine address clusters associated with the unconfirmed printing devices; send probe messages to addresses within at least one address cluster; receive responses to the probe messages; and update the DDB using data in the responses.

Abstract: Example systems and methods are disclosed for retrieving and installing a software package on a set of printing devices. An example method may include determining to begin retrieval and installation of a software package for a set of printing devices that includes a caching printing device and corresponding target printing devices. The method may include providing the software package to a data store. The method may include generating a key with an expiration time permitting access to the data store. The method may include sending the key to the caching printing device to retrieve the software package from the data store before the expiration time. The method may include receiving, at a server, status updates from the target printing devices during retrieval of the software package. The method may include receiving, at the server, completion reports from the set of printing devices after installation of the software package.