Firmware Files
A number of firmware image files are compiled for every new MULTI-Module firmware release. Use the MULTI-Module Firmware Download site to download the correct file for your module:
Standard File Naming
The standard firmware file names follow this pattern:
mm-[module type]-[sub type]-[channel order]-[firmware version].bin
The parts of the file name are explained below.
Module Type
Determines the type of MCU the firmware was built for:
avr - for older MULTI-Modules with an ATmega328p MCU
stm - for MULTI-Modules with an STM32 MCU
orangerx - for OrangeRX modules running MULTI-Module firmware
t18int - Jumper T18 radios with a 5-in-1 module
tlite5in1 - Jumper T-Lite radios with a 5-in-1 module
If you don't know what module type you have, it is probably stm.
Sub Type
For STM modules, the type of module or radio:
serial - standard firmware for OpenTX, EdgeTX, erSky, or other serial radios
5in1 - DIY 5-in-1 modules
cc2500 - radios/modules which only have the CC2500 RF component
ppm - radios which use PPM Mode
For AVR modules, the flash method used to update the firmware:
txflash - update from the radio
usbasp - update using the Arduino IDE and a USBasp
Channel Order
The Expected Channel Order for the firmware image.
aetr - expects to receive channel data in AETR order
reta - expects to receive channel data in RETA order
taer - expects to receive channel data in TAER order
The default Expected Channel Order is AETR.
Firmware Version
The version number of the firmware.
Firmware File Examples
Some examples to help select the correct firmware file:
Other Firmware Files
A small number of files are compiled for debugging or development purposes. These files are only produced with AETR channel order.
These firmware files are not for general use and should only be used when testing.
Protocol Dumping
Protocol Dumping firmware enables the radio to capture and decoding RF transmissions from other RC transmitters which use the common XN297 RF module. This can be used to reverse-engineer unknown protocols so that they can be added to the MULTI-Module.
Captured data is displayed via serial output.
Protocol Dumping firmware is named in this pattern:
mm-stm-xn297dump-[debugging type]-[firmware version].bin
Protocol Dumping firmware only includes the XN297L dumping protocol and cannot be used with any models or receivers.
See the Protocol Dumping page for more information:
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