The UC33 comes with a number of GM/GS/XG/GM2 defined SysEx messages pre programmed that you can use.

However, it is not possible to program your own Sys Ex message into the UC33. If you require this on the UC33, we recommend you use a MIDI translator program.

The pre-programmed Sys Ex messages are defined in the table in Appendix B of the UC33 user manual.