Downloaded security content packages are automatically evaluated against the following conditions in the order listed:
If the appliance is connected to the Internet: Was the package downloaded from the correct update channel of the DTI download server?
If the appliance is not connected to the Internet: Was the package downloaded from the correct content channel of the DTI Offline Portal?
Is the package version number compatible with the target appliance release?
Does the package acceptance level match the level configured on the target appliance?
If the downloaded package is a delta package: Is the version of the content delta package compatible with the version of the security content installed on the target appliance?
If the package is not downloaded for a rollback action: Is the version of the downloaded package the same as or newer than the version of the installed content?