You can upgrade to Adapter Development Kit 6.5 from Adapter Development Kit 6.0.1 or 6.1. Simply install Adapter Development Kit 6.5 over the existing installation using the instructions in
Installing
Adapter Development Kit 6.5.
Important: Upgrading removes all installed Adapter Development Kit 6.0.1 or 6.1 components. You will not be able to restore the earlier version.