What revision of U3 did you upgrade to? Do you have the build number of the host?
i updated esxi with this command from basic to update3:
esxcli softwarevib update -d "/vmfs/volumes/datastore.........."
but i can't the newer one.
so i used : esxcli software profile update --depot /vmfs/..../ESXi550-20168001.zip -p ESXi-5.5.0-20160804001-standard
I got all of updates and I updated all patches in sequence.
and my problem solved.
but i don't know why?
Thanks for your replies
I am not sure how did you updated but below driver is up to date with ESXI 5.5, that's why you receive error.