Nov. 4, 2026

This zip file contains the CTR2-MIDI_v300xx_S3.BIN firmware file that are used to flash the CTR2-MIDI firmware on to CTR2-MIDI hardware using the ESP32-S3 processor. This hardware supports both USB MIDI and Bluetooth-LE MIDI in CTR2-MIDI mode, and direct control of the Flex 6000/8000/Aurora radios in the Flex WiFi mode.

I've included the manuals for MIDI and Flex modes. You can find MIDI configurations for many of the apps that CTR2-MIDI can be used with here: https://ctr2.lynovation.com/ctr2-midi-configuration-files/  

The manual for MIDI mode explains how to import these maps into your app. They are included in this zip file.

The manuals have been updated with the latest information on using the ESPConnect flash tool to update the firmware in you CTR2-MIDI.


To download these files to your device, extract them into a folder then use the instructions in Install or Update CTR2-MIDI Firmware section in the MIDI mode or Flex mode manuals. 

73, Lynn, KU7Q