CTR2 Configuration Files
All CTR2 MIDI controllers (running CTR2-MIDI or CTR2-Dial firmware), must be configured to match the MIDI map of the app they are controlling. These configurations include both the MIDI controls…
CTR2-Flex Firmware Manual – v2.03.06
December 26, 2025 This update includes the latest feature additions to CTR2-Flex firmware.
CTR2-Quad Hardware Manual – v1.00
M5Dial based CTR2 hardware is available in three different configurations. All three variations run the CTR2-Flex firmware that provides Bluetooth/USB MIDI control for third-party apps like SmartSDR for iOS, SDR-Control,…
CTR2-Duo Hardware Manual – v1.00
M5Dial based CTR2 hardware is available in three different configurations. All three variations run the CTR2-Flex firmware that provides Bluetooth/USB MIDI control for third-party apps like SmartSDR for iOS, SDR-Control,…
CTR2-Uno Hardware Manual – v1.00
M5Dial based CTR2 hardware is available in three different configurations. All three variations run the CTR2-Flex firmware that provides Bluetooth/USB MIDI control for third-party apps like SmartSDR for iOS, SDR-Control,…
Download the Latest Updates – January 1, 2026
Find the latest CTR2 firmware updates here
CTR2-Dial Firmware
CTR2-Dial is an enhanced version of CTR2-MIDI with a color touchscreen display. It is designed to send MIDI commands to a 3rd-party radio control app, such as Marcus’ (DL8MRE) excellent…
CTR2-Flex/CTR2-Dial Dual-Boot Firmware v2.03.06
The new CTR2-Flex v2 firmware allows you to boot either CTR2-Flex or CTR2-Dial firmware without re-flashing your CTR2 controller.
CTR2-Dial Firmware Operation Manual – v2.03.06
CTR2-Dial firmware is now included in CTR2-Flex v2 firmware. You can view the operation manual for CTR2-Dial here. To download a copy of it, press the Download button below. December…
Download CTR2-MIDI Firmware – v2.00.02
Download the latest CTR2-MIDI firmware for CTR2-MDI and CTR2-Micro here