Upgrades (ISO Files)
Upgrades are major release updates, delivered as an ISO file to add new features, operating system (OS) updates, and resolve issues as part of the installation. An upgrade generally increment the modification (M) numeric indicator for IBM V.R.M software deliveries).
Administrators might be required during major updates to install an ISO, then apply a Fix Pack to update a deployment to the latest software version. IBM does not release ISO files with every Fix Pack version. Administrators should review the Upgrade Guide to determine if VMs meet suggested memory requirements as new features can consume more resources over time.