Upgrading to the current version of UBB.threads 7
The upgrade path from UBB.threads 7.5.x versions, has always been to move to the most recent version of UBB.threads as they become available. Such as 7.5.x => 7.6.x.

There is no need to do an incremental update from 7.5.8 to 7.5.9 to 7.5.9.1 to 7.6.0. You should update directly from your current UBB.threads 7 version, to the most recent version of UBB.threads.

The UBB.threads 7 upgrade guide can be found in the Docs tab, or by visiting:
https://www.ubbcentral.com/doc_upgrade7.php