An upgrade to One Man Band 10.3 costs $12.50.
Send a message to JosMaas@1manband.nl that you wish to upgrade to One Man Band 10.3 and specify the name, post address and email address that you specified when you registered for the previous version. After this info is checked you will receive info on how to proceed.
Do not uninstall your previous version of OMB before installing the new version, each version is installed in a separate folder. To use all the presets that you have defined in the old version of OMB, copy the file omb.cfg from the folder where the previous version is installed to the folder of the new version.