Frist grab the release from the cisco page here
Then put it through scp from you Download place to the ESX Server
scp CiscoAVS_1.5-5.2.1.SV3.1.5-pkg.zip root@10.32.5.150:/tmp Password: CiscoAVS_1.5-5.2.1.SV3.1.5-pkg.zip 100% 35MB 806.2KB/s 00:45
Next you Login to the ESX through SSH and check the current version
~ # vemcmd show version VEM Version: 5.2.1.3.1.3.0-3.2.1 System Version: VMware ESXi 5.5.0 Releasebuild-2068190 ESX Version Update Level: 0
Then i unzipped the archives and upgraded the vib
cd /tmp/ unzip CiscoAVS_1.5-5.2.1.SV3.1.5-pkg.zip unzip CiscoAVS_1.5-5.2.1.SV3.1.5.zip cd ~ esxcli software vib update -v /tmp/CiscoAVS_1.5-5.2.1.SV3.1.5/cross_cisco-vem-v197-5.2.1.3.1.5.0-3.2.1.vib --maintenance-mode
And thats it, i’m now running the new AVS Version
~ # vemcmd show version VEM Version: 5.2.1.3.1.5.0-3.2.1 OpFlex SDK Version: 1.1(1j) System Version: VMware ESXi 5.5.0 Releasebuild-2068190 ESX Version Update Level: 2