The best way is to contact us at Easysoft and we will help you with the upgrade process.
Upgrades of Easysoft ODBC-ODBC Bridge will require a new license, so don't upgrade an existing licensed ODBC-ODBC Bridge Server until you have got a new license.
Generally speaking, you do not have to upgrade your ODBC-ODBC Bridge Server just because you upgraded your ODBC-ODBC Bridge Client or vice versa. If you are concerned about compatibility, contact us before upgrading.