ESXi 5.0 to 5.1 upgrade error

   In datastore1, I enter

esxcli software profile update -d VMware-ESXi-5.1.0-799733-depot.zip -p VMware-ESXi-5.1.0-799733-standard

It returns

[MetadataDownloadError]
Could not download from depot at zip:/var/log/vmware/VMware-ESXi-5.1.0-799733-depot.zip?index.xml, skipping (('zip:/var/log/vmware/VMware-ESXi-5.1.0-799733-depot.zip?index.xml', '', "Error extracting index.xml from /var/log/vmware/VMware-ESXi-5.1.0-799733-depot.zip: [Errno 2] No such file or directory: '/var/log/vmware/VMware-ESXi-5.1.0-799733-depot.zip'"))
        url = zip:/var/log/vmware/VMware-ESXi-5.1.0-799733-depot.zip?index.xml

What am I doing wrong?

Thanks