PIX/ASA: Upgrade a Software Image using ASDM or CLI Configuration Example

ASA5510#show disk0:
-#- --length-- -----date/time------ path
  6 5124096    Jan 01 2003 00:06:22 asa702-k8.bin
  7 5623108    Feb 12 2007 00:23:48 asdm-522.bin
 10 5539756    Feb 12 2007 00:14:18 asdm-521.bin
 11 8294400    Dec 07 2006 05:47:20 asa721-24-k8.bin
 12 6002680    Dec 21 2006 03:58:30 asdm-52034.bin
 13 8312832    Feb 12 2007 22:46:30 asa722-k8.bin
23949312 bytes available (38932480 bytes used)

!--- Command to set "asa722-k8.bin" as the boot image.
ASA5510(config)# boot system disk0:/asa722-k8.bin

!--- Command to set "asdm-522.bin" as the ASDM image.
ASA5510(config)# asdm image disk0:/asdm-522.bin
ASA5510# write memory
ASA5510# reload

To verify ASA boot image
1. show run boot
2. show boot


To verify ASDM image
1. show run asdm
2. show asdm image


Reference:
PIX/ASA: Upgrade a Software Image using ASDM or CLI Configuration Example
http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a008067e9f9.shtml