How do I upgrade ASA to the latest version?

Once you’ve downloaded the necessary software, follow these steps :

1. Back up your current configuration file using TFTP. Alternatively,
you can just paste it into Notepad and save it on your hard drive.
Just make sure you have a copy somewhere in case something goes wrong.

2. Determine which version of ASA software you have now. Here’s an example :

ASA5510# sh ver

Cisco Adaptive Security Appliance Software Version 7.0(6)
Device Manager Version 5.0(6)

ASA5510# dir

Directory of disk0:/
5 -rw- 5474304 00:05:00 Jan 01 2003 asa706-k8.bin
675 -rw- 5823980 16:34:26 Nov 07 2006 asdm506.bin

255426560 bytes total (244064256 bytes free)

ASA5510#

3. You can use TFTP to move the image to the ASA. Here’s an example :

ASA5510# copy tftp disk0

Address or name of remote host []? 10.253.15.77
Source filename []? asa802-k8.bin
Destination filename [disk0]? disk0:asa802-k8.bin

Accessing tftp://10.253.15.77/asa802-k8.bin…!!!!!! (truncated)
Writing file disk0:/asa802-k8.bin… !!!!! (truncated)

14524416 bytes copied in 118.210 secs (123088 bytes/sec)