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How to tell what firmware I have on my Frsky Taranis?
#1
There are two separate firmware on your Taranis, one is for the TX module (the part that transmit signal to the receiver), and there is the OpenTX firmware which is basically the interface.

For both firmware, there are two versions:
  • International firmware (a.k.a "non-EU")
  • EU firmware (a.k.a "EU-LBT")
The EU version was created to comply with EU laws by amending the protocol. Because of that, your transmitter module, and receiver have to have the matching firmware, i.e EU with EU, or International with International. Otherwise you won't be able to bind them.

If that happens, you will either have to flash your TX, or RX to the correct firmware.
Here is how to flash receiver firmware: https://oscarliang.com/flash-frsky-rx-firmware

It's hard to know what firmware you have on your TX module, unless you try to bind it to two different receivers, one with EU firmware and the other with non-EU and see which one works. If you are not sure, just flash it again.
Here is my tutorial how to flash the internal TX module: https://oscarliang.com/flash-taranis-internal-module/

Here are the technical differences between EU and non-EU firmware.

On the other hand, for OpenTX firmware, it might appear to work normally whether you have EU or non-EU firmware. The main difference is the missing protocol options in the radio setup.
Anyway, it's pretty easy to tell which OpenTX firmware you have:

Go to model setup in your taranis, under "Internal RF", "Mode" and see how many different options you have.
  • D8, D16, LR12 - if you can select all three then you have the international firmware
  • D16 only - you have one of the first versions of the EU-LBT firmware. If this is the case you really should update your firmware because it's quite outdated
  • D16, LR12 - you have the newer EU-LBT firmware, and you can use the radio for both the X-series and L-series receivers (but not the D series)
(These options are TX to RX protocols as explained here: https://oscarliang.com/pwm-ppm-sbus-dsm2...ifference/)

[Image: na3WpNkl.jpg]


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Don't be a LOS'er, be an FPV'er :)  My Gear - Facebook - Instagram - Twitter
[-] The following 3 users Like Oscar's post:
  • Carl.Vegas, McDee, t3rminal
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#2
I've been asking this question all over the internet and everyone always tells me it's not possible. Thanks for the information Oscar :-)
[-] The following 1 user Likes t3rminal's post:
  • Carl.Vegas
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#3
(22-Aug-2017, 01:32 PM)t3rminal Wrote: I've been asking this question all over the internet and everyone always tells me it's not possible. Thanks for the information Oscar :-)

Well arcording to that info I have international on my radio and I definitely have EULBT on my Recievers how can this be possible it all works
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#4
Updated info, just to make more clear between the difference between Opentx firmware and TX module firmware.
Don't be a LOS'er, be an FPV'er :)  My Gear - Facebook - Instagram - Twitter
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#5
Hi Oscar, Thank you for this clarification. However, while im currently struggling to bind my XM+ to my Taranis Qx7 I saw that on my Taranis i have only following 3 options on the internal RF mode:

- XJT D16
- XJT D8
- XJT LR12

I cannot choose only D16. Does this mean that i have to flash my Taranis with the right version? I dont recall that i ever flashed my Taranis when i bought it a couple years ago so it is still under initial settings.
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#6
Your internal module is an XJT module, so I wouldn't worry about the displayed names in Internal RF mode.
Has your QX7 ever worked with another receiver? If it has then the problem is probably the XM+ since it's new? Maybe the XM+ has ACCST V2 firmware?
Do you know if your QX7 is running ACCST V1 or V2 firmware? You might want to try flashing the same FW to the XM+ just in case.

Anyway, try to move away from Frsky eco system when you can, it's bad.
Don't be a LOS'er, be an FPV'er :)  My Gear - Facebook - Instagram - Twitter
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