Where can I get the latest OS update utility for Engine? October 11, 2020 12:52 For Mac, Windows and Linux, you can always find the latest Teensy loader application on the PJRC website here: Teensy Loader Related articles Do the Engine MIDI outputs power a MIDI thru box? What switches (buttons) are used on Engine, or where can I get replacements? Using probability to control pattern playback direction Using the pattern based arpeggio Configuring Engine controller knobs