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Design & Configure

Cisco ASA: Upgrade and Boot

Technology: Network Security
Area: Firewalls
Vendor: Cisco
Software: 8.X, 9.X
Platform: Cisco ASA

To upgrade ASA-OS first download new image to disk0: (flash) for example from ftp server. After downloading, list the disk directory and make sure right image is on:

ASA# show disk
--#-- --length-- -----date/time------ path
95 69454656 Sep 03 2015 07:33:56 asa941-lfbff-k8.SPA
96 26350916 Sep 03 2015 07:34:42 asdm-741.bin
97 33 Jul 20 2016 13:01:49 .boot_string
11 4096 Sep 03 2015 07:37:28 log
20 4096 Sep 03 2015 07:38:34 crypto_archive
21 4096 Sep 03 2015 07:38:52 coredumpinfo
22 59 Sep 03 2015 07:38:52 coredumpinfo/coredump.cfg
98 41836544 Sep 03 2015 07:43:30 asasfr-5500x-boot-5.4.1-211.img
100 16962269 Apr 29 2016 12:31:05 anyconnect-win-4.1.06013-k9.pkg

Set the required image to boot variable:

ASA(config)# boot system disk0:asa941-lfbff-k8.SPA
INFO: Converting disk0:asa941-lfbff-k8.SPA to disk0:/asa941-lfbff-k8.SPA
ASA(config)# sh boot
BOOT variable = disk0:/asa941-lfbff-k8.SPA
Current BOOT variable = disk0:/asa941-lfbff-k8.SPA
CONFIG_FILE variable =
Current CONFIG_FILE variable =

You can reload the ASA and wait that the new ASA-OS boots up:

ASA#reload

 

 
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