How to upgrade the software in a Cisco ASA

 

Install the new images using TFTP. Enter this command separately for the OS image and the ASDM image:

hostname# copy tftp://server[/path]/filename disk0:/[path/]filename

For example:

hostname# copy tftp://10.1.1.1/asa840-4-k8.bin disk0:/asa861-k8.bin

hostname# copy tftp://10.1.1.1/asdm-64099.bin disk0:/asdm-661.bin

To change the OS boot image to the new image name, enter the following commands in global configuration mode.

hostname(config)# clear configure boot

hostname(config)# boot system disk0:/[path/]new_filename

For example:

hostname(config)# clear configure boot

hostname(config)# boot system disk0:/asa861-k8.bin

To configure the ASDM image to the new image name, enter the following command:

hostname(config)# asdm image disk0:/[path/]new_filename

To save the configuration and reload, enter the following commands:

hostname(config)# write memory

hostname(config)# reload