First you need to download whatever patch it is that you want to install. Then evacuate and put in maintenance mode.
Then you need to download and install VMware CLI and then use a normal command prompt to issue this comma
esxcli -s [IP of ESXi server] -u root -p [password] software vib install -
d
/vmfs/volumes/[Volume GUID thingy]/update-from-esxi5.0-5.0_upda
te03.zip
You are presented with a splurge of text and told to reboot and when you do, your patch is installed.
