This is for the pixes, I haven't upgraded an asa yet...should be close or the same
* find latest version of code, these are usually *.bin files located on
http://www.cisco.com/cgi-bin/tablebuild.pl/pix* confirm the flash and RAM requirements of the PIX OS software versus what the PIX has (”sho ver”)
* make sure you have a backup of the old PIX OS and PDM to the tftp server (or at least confirm the software is there)
Note: You cannot back them up from the PIX, so you will need to download them and put them on the tftp server
* put in a change control form
* once change controls confirms date/time do the upgrade:
wri mem*** only if you save your configs via tftp
wri net
conf t
ca save all
copy tftp://your tftp server ip/pix635.bin flash:imageskip this if you don't use pdm
copy tftp://your tftp server ip/pdm-304.bin flash:pdm
*** if this is a failover pair, upgrade the other pair
reboot
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