IMPORTANT! Carefully read and follow the update instructions below. If you don't—and then run to the forums asking why it's not working—the interwebs will make fun of you.
STEP ONE—Update HX Edit (Do This First!)
IMPORTANT! As of this writing, the latest version of HX Edit is 3.00. If you're absolutely certain that you've already updated to 3.00, you may skip to STEP TWO below to install 3.01 into your Helix/HX hardware.