This part of the manual contains a number of migration guides that will help you upgrade ADONIS from an older version to version 15.0. Each guide contains all the steps that need to be taken, with everything explained in detail:
Migration from All Other Versions to ADONIS 15.0
If you are using ADONIS 12.0 or earlier, please contact your ADONIS consultant for assistance with the required steps.
You are already using ADONIS 15.0 and want to install a hotfix? Here are step-by-step instructions: