Installing multiprotocol module questions.

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Feb 6, 2018
I want to use an IRX4 multi module in my old Taranis X9D (not plus) version 1.1.02. After reading the problems some people are having with the set up I would like to ask how to find the best way to do this without messing up my settings and other things.
May 31, 2018
First, unless you want to use your iR4 in ppm mode you need to update the OpenTX Firmware on your X9D to 2.2.2.

If you are still on 1.0 then you will need to use the power off "zadig(PC)/dfutil(MAC)" method
If you are on 2.X the you can also use the SD card or power on USB method which requires no driver setup bu requires you to update the bootloader as a separate step.

This is best done using OpenTX Companion since that way you can convert any existing models and the TX directly to 2.2.2. Otherwise it is more involved. Depending where you are starting you will have to redo Telemetry and the SD card content.

If you don't know what any of that means let me know and I can point you to some resources.
May 31, 2018
you will need to use the power off method to update the firmware.

This is described quite well here...

Make sure to back up the "models and settings" (aka eeprom) and the existing firmware before you change anything.

The important thing with Companion is to make sure to set the Radio Type in Settings->Settings...[Radio Profile] to match your radio and in particular, the X9D is different from X9D+. You also set the build options there before you download the firmware from OpenTX to your PC using File->Download... All unchecked is a reasonable default for most. You always chose differently and do it again if you find you need something. In 2.2 there are less options for the Taranis models so it is less error prone that it was in previous releases.

If you don't care about the models you can upgrade directly to OpenTX 2.2.2 If you do care about them then it is easiest to upgrade them using Companion. Just loading the backup should do it. Then you should be able to write the updated model file (originally .eepe, changed to .otx in 2.2) to your updated radio.

Note the upgrade just takes care of the format. You will have to fix up the various breaking changes. Briefly, for 2.1 telemetry has to be reprogrammed and the SD card sounds replaced. For 2.2 the SD card content has to be replaced. Any Custom content has to be adapted.

If you want to upgrade the models on the radio you will have to upgrade it through each major version of OpenTX (2.0, 2.1, 2.2 ) to preserve them. This can be done but it is a major pain since you need to get each version of Companion to download the firmware...or get the firmware from elsewhere.
May 3, 2018
Im watching what is going on Here with this Module change im in a little better shape I have a QX7 and I am on 2.2.2
I went back in and redownloaded 2.2.2 but I put a CHECK Mark in the box for "Multi Protocol"
Im using this so I don't have to haul around my Spectrum TX only use it for Indoor Bind n Fly stuff
My concern now is that if im correct on this Spectrum doesn't use AETR sequence. So I am a little confused how I am going to make it work correctly with all my Bind n Fly planes
May 31, 2018
The "FrSky" version of the multi-module firmware requires AETR channel order. If you bought the module wiht the FrSky option that's what you should have. It internally maps to the order expected by the protocol...TAER in the case of Spektrum. So set the Default Channel Order in the TX Radio Settings to AETR and you should be good when you make new models.

If you didn't get the module with the FrSky version of the firmware then it may get a bit confusing and it may be best to flash it with the "FrSky" firmware.

The other issue you might have is that Spektrum BNFs require about 80% of the FrSky throw. I'm not sure if the Multi-module compensates for that. It may depend on the firmware version.

I don't actually have one to test but the firmware information is all here...
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