Hi Jacob, I 'm pasting back to forum for others to benefit as well.
You can update jAER by just doing a git pull and then running again from
within netbeans. If you run from a release, you can update and compile
from within the jAER Help menu.
DVS, APS and IMU are separately enabled from the Hardware Configuration
panel. Same for playback, you can enable viewing DVS, APS, and IMU from
the Davis menu.
Check out the tutorial videos, they will help you get going faster.