CTR2-Flex Firmware Manual – v2.05.06

CTR2-Flex firmware makes your CTR2-Quad, Duo, Uno, or older CTR2-Flex and CTR2-Dial hardware into a full-fledged, standalone Flex 6000/8000/Aurora controller.

You can view the operation manual for CTR2-Flex here. To download a copy of it, press the Download button below. There is a separate manual for CTR2-Dial firmware that configures your CTR2 unit into a dedicated, ham centered MIDI controller for your favorite radio control app. You can download the manual for CTR2-Dial here.

September 30, 2026: v2.05.06

• Updated the manual to match the latest firmware release

There is a separate manual for CTR2-Dial firmware. You can download it here.

• Starting with v2.04.00 I’ve split the hardware descriptions out into three separate manuals:
  • CTR2-Uno
  • CTR2-Duo
  • CTR2-Quad
  • You can use the hardware manual for CTR2-Uno and CTR2-Duo for the older single and dual-knob CTR2-Dial and CTR2-Flex hardware.
• You can download the CTR2-Flex/CTR2-Dial firmware here.