Cisco ASA 55 Series Software Manual page 21

Cisco ASA and Firepower Threat Defense Reimage Guide
b) See http://www.cisco.com/go/license, and click Get Other Licenses.
Figure 1: Get Other Licenses
c) Choose IPS, Crypto, Other.
Figure 2: IPS, Crypto, Other
d) In the Search by Keyword field, enter asa, and select Cisco ASA 3DES/AES License.
Figure 3: Cisco ASA 3DES/AES License
e) Select your Smart Account, Virtual Account, enter the ASA Serial Number, and click Next.
Reimage from Firepower Threat Defense to ASA
Cisco ASA and Firepower Threat Defense Reimage Guide
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