Upgrade NBU 7.1.0.1 to 7.1.0.4

Hi everybody,

I need to upgrade the Netbackup environment from version 7.1.0.1 to version 7.1.0.4 to fix some problems and to prepare for migrating NBU to version 7.5

For now i would like to know if i can just install the patch 7.1.0.4 directly or its necessary as pre-requisite to install the old patches?

Another info that i could not found is how do i perform a rollback from patch install? Just for precaution.

Tks and Best Regards.