If you purchased the IMMusic Technical Document for either SD40 or SD90, check which version (located in the left side of the page footer) you have. The latest is 0519_01. We have added system exclusive commands for all 13 footswitches along with the ability to do a MIDI reset.
At this time we don’t have an easy way for you to download the updated version yourself, but if you drop us an e-mail or post a comment here, we will gladly send you the latest-n-greatest version.
As we continue to find additional ways to control the Ketron SD series of instruments we will