You need to buy the support service(CON-SU...) from Cisco.
This will give you:
⢠Signature file updates and alerts
⢠Registered access to Cisco.com for online tools and technical assistance
⢠Access to Cisco Technical Assistance Center (TAC)
⢠Cisco IPS Sensor Software updates
⢠Options for Advance replacement of failed hardware
The service contract is valid for 1 year and is per device.