...
VM template update procedure
To update a VM template:
Shut down the deployed template gracefully and create an instance
Update the instance (e.g. install new service pack or security patch)
Promote the template to a master template, with a name that denotes it as the new version.
...
See Promote an instance to a master template on https://abiquo.atlassian.net/wiki/spaces/doc/pages/311371382/Manage+VM+templates#Promote-an-instance-to-a-master-template
Propagate the new template to all the relevant datacenters' appliance libraries
Share the new template in the catalogue to all enterprises as applicable
Rename or change the description of the old template to show users that it is deprecated
Considerations
When you want to update a template, remember:
...
Changing the virtual disks of a template on the NFS filesystem, such as replacing a VMDK file in the NFS repository, is not recommended. This is because you would also need to correctly update fields such as ''virtualimage.diskFileSize'' in the underlying Abiquo database. Changes to the Abiquo database are not recommended or supported by Abiquo. The OVF information may also need to be updated if you change the underlying virtual disk because sometimes this information may be required to maintain platform coherence.