In a different thread
the topic of working with SysX and an SD40 came up. We started on a video earlier today that will show a few commands in action, but we don't have it quite finished yet.
For now, one question regarding where you can find the "tab/sys" option came up. We do have that part of the video done but wanted to share the answer early. You need to go into the MIDI Menu and then touch "Arranger Keyboard." Next, touch "RX" on the left side and then on the lower right touch "Filter." The next screen is where you will find the "Tab" option. It defaults to on. You want to turn it off. Also, make sure you are using MIDI In 2 on the SD40.
We should get the video finished up in the next day or so and will update when it's ready to go.