Syth Tool 2.0 is out now, and it includes the crave. Check the download section at Behringers crave site.
Caution: the new firmware seems to change the swing value. If you already had sequences stored, they sound funny, so you have to set SWING to 0 and it is ok again.
New Update with a little documentation to the
Midi Designer Pro Layout for the Crave. (iOS-App) https://mididesigner.com/qa/7902/all-midi-suporting-knobs-of-a-behringer-crave