HP Smart Update Manager (User Guide) - Manual (Page 76)

Troubleshooting 76
Performing these steps allows HP SUM to function, although after a period of time (ranging from minutes
to hours), McAfee disables HP SUM access.
Downgrade of ProLiant G6 Server ROM from
2010.03.30 or later to 2010.03.01 or earlier using
HP SUM is not supported
When HP SUM is launched, all the available versions of ROM components in the repository are listed under
Updates to be installed section of the Select Items to be Installed screen.
If ROM downgrade is attempted from 2010.03.30 or later to 2010.03.01 or earlier using HP SUM for
ProLiant G6 servers, the ROM components with unsupported version are automatically removed from the
updates to be installed. ROM components do not have the ability to block downgrades.
This behavior is by design, and HP recommends that you do not copy the ROM components containing the
unsupported versions in the HP SUM repository.