You can remove an update, such as a fix pack, to a product package
to revert to a previous version by using the Roll Back Packages wizard of IBM® Installation
Manager.
During the rollback process, Installation Manager must access files
from the earlier version of the package. By default, these files are stored
on your computer when you upgrade to a new package. If you have deleted the
files that are saved locally for rollback or cleared the Save files
for rollback check box in the Preferences page (File
> Preferences > Files for Rollback) while upgrading, you will
not be able to roll back to the previous version without the media or repositories
that were used to install that version of the package.
Use the rollback feature if you have applied an update to a product
package and decide later that you want to remove the update and revert to
the earlier version of the product. When you use the rollback feature, Installation
Manager uninstalls the updated resources and reinstalls the resources from
the previous version. You can only roll back one version level at a time.
For
more information, see the Installation Manager online help or Information
Center.
To revert an update to a previous version, complete the following
steps:
- Start IBM Installation Manager.
- On the Start page, click Roll Back.
- In the Roll Back Packages wizard, from the Package Group
Name list, select the package that you want to revert to the previous
version and click Next.
- Follow the instructions in the wizard.