In this chapter, we went through several maintenance tasks , including performing software updates and image recovery. You first learned that software updates can be either signature updates or service packs; although new signatures are released as signature updates, new IDS features are released as service packs . You learned how to identify the IDS update file by software type, IDS version, service pack level, and signature version and where to store the update file depending on whether you're using the CLI or the IDS MC to perform the upgrade. Then, we went through the configuration tasks to perform signature and sensor updates using both the CLI and the IDS MC. Finally, we reviewed how to recover the image from the recovery partition to the application partition using the recover application-partition command from the CLI.