You can order the "Dolibarr Update Service" our support will help you:
- Update your version of Dolibarr
- Solve all the problems linked to the Dolibarr update,
- Fix bugs in your modules caused by Dolibarr update.
Dolibarr's Update service only concerns the update of the old version of Dolibarr to a new more stable and secure version (the reverse is not possible).