Note: I’ve tested this procedure with just one server from serie SYS: SYS-E32-1

1) SSH to ESXi

2) List all profiles available from VMware depot site

~ # esxcli software sources profile list -d http://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml | grep 5.5
ESXi-5.5.0-20131201001s-standard  VMware, Inc.  PartnerSupported
ESXi-5.5.0-1331820-no-tools       VMware, Inc.  PartnerSupported
ESXi-5.5.0-20131204001-standard   VMware, Inc.  PartnerSupported
ESXi-5.5.0-1331820-standard       VMware, Inc.  PartnerSupported
ESXi-5.5.0-20131201001s-no-tools  VMware, Inc.  PartnerSupported
ESXi-5.5.0-20131204001-no-tools   VMware, Inc.  PartnerSupported

3) Install latest ESXi version from VMware depot site, ESXi-5.5.0-1331820-standard

esxcli software profile install -d http://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml -p ESXi-5.5.0-1331820-standard --ok-to-remove

4) Set your acceptance level to CommunitySupported

~ # esxcli software acceptance set --level=CommunitySupported

5) Install custom vib driver for our Intel NIC 82579V

esxcli software vib install -v http://files.v-front.de/net-e1001e-1.0.0.x86_64.vib

6) Reboot and cross your fingers

~ # reboot

6) If everything worked ok your new build should be 1331820

~ # uname -a
VMkernel xxxx 5.5.0 #1 SMP Release build-1331820 Sep 18 2013 23:08:31 x86_64 GNU/Linux