The attached documents should help you to make the upgrade process as smooth as possible. The upgrade itself is not restricted to BVMS software only. The supported software and firmware versions can be found in the release notes of the related BVMS version.
An attachment is added to this article for each BVMS version. Currently the upgrade guides for BVMS 8.0 and 9.0 are attached to this article. From BVMS 10.0 onwards a description on how to migrate systems has been included as well.