I recently bought a taranis qx7 and went to flash new firmware on it. Pretty sure I messed it up. Now the x7 wont turn on. I push and hold the power button and all I get is the back light and the power button is red until I release it. I can get it into bootleg mode but thats about it. Ive attempted re flashing it with opentx but with no progress.

You might have a corrupt bootloader.

Leave your QX7 switched off and simply just plug a USB cable into it. Then run OpenTX Companion and select the option to flash firmware to the transmitter. You will see the flashing progress appear in a dialog box on the screen. Doing it that way will (re)flash both the bootloader and OpenTX to the latest versions.

If that doesn't work, open up the transmitter case and re-seat the button cell RTC battery on the mainboard by removing and refitting it. While you have it out, measure the voltage to check that it's reading 3.3V. If it is only reading 3V or lower then replace it with a new one.

(18-Jan-2023, 06:45 PM)SnowLeopardFPV Wrote: You might have a corrupt bootloader.

Leave your QX7 switched off and simply just plug a USB cable into it. Then run OpenTX Companion and select the option to flash firmware to the transmitter. You will see the flashing progress appear in a dialog box on the screen. Doing it that way will (re)flash both the bootloader and OpenTX to the latest versions.

If that doesn't work, open up the transmitter case and re-seat the button cell RTC battery on the mainboard by removing and refitting it. While you have it out, measure the voltage to check that it's reading 3.3V. If it is only reading 3V or lower then replace it with a new one.

Mainboard battery was at 2.9v. Once I get home ill replace it and keep my fingers crossed. Thank you for the advice.

(18-Jan-2023, 06:45 PM)SnowLeopardFPV Wrote: You might have a corrupt bootloader.

Leave your QX7 switched off and simply just plug a USB cable into it. Then run OpenTX Companion and select the option to flash firmware to the transmitter. You will see the flashing progress appear in a dialog box on the screen. Doing it that way will (re)flash both the bootloader and OpenTX to the latest versions.

If that doesn't work, open up the transmitter case and re-seat the button cell RTC battery on the mainboard by removing and refitting it. While you have it out, measure the voltage to check that it's reading 3.3V. If it is only reading 3V or lower then replace it with a new one.

So I attempted both with no success. After trying to flash with opentx it says successful but then under it it says "no valid DFU suffix signature. Warning: file has no DFU suffix"

Maybe you are trying to flash the wrong OpenTX firmware to your QX7. What version of the QX7 do you have? Is it the "ACCST" version or the "ACCESS" version? One of those two words will be printed near the bottom right corner of the screen. You need to make sure you are flashing the firmware that matches the type of your specific QX7 (either the ACCT or ACCESS firmware).

(18-Jan-2023, 11:50 PM)SnowLeopardFPV Wrote: Maybe you are trying to flash the wrong OpenTX firmware to your QX7. What version of the QX7 do you have? Is it the "ACCST" version or the "ACCESS" version? One of those two words will be printed near the bottom right corner of the screen. You need to make sure you are flashing the firmware that matches the type of your specific QX7 (either the ACCT or ACCESS firmware).

It is the access version. When flashing the firmware how do I make sure it is the correct version. Again thank you for the help.

In OpenTX Companion, from the menu at the top select Settings -> Settings, and when the Edit Settings screen appears make sure you have the Radio Type set as "FrSky Taranis X7 / X7S Access" (there is also another entry without "Access" on the end which isn't compatible with your transmitter). Then when you select to download the firmware it will download the correct firmware file which you can then flash to the transmitter using the same switched off method that I described in my previous post.

(19-Jan-2023, 12:11 AM)SnowLeopardFPV Wrote: In OpenTX Companion, from the menu at the top select Settings -> Settings, and when the Edit Settings screen appears make sure you have the Radio Type set as "FrSky Taranis X7 / X7S Access" (there is also another entry without "Access" on the end which isn't compatible with your transmitter). Then when you select to download the firmware it will download the correct firmware file which you can then flash to the transmitter using the same switched off method that I described in my previous post.

Ok so it looks like that may be the problem now the issue is when I try to write the version to the tx it says "New firmware not compatible with the one currently installed."

When flashing the firmware, is the "Check Hardware compatibility" box ticked? If it is then untick it and try again.

(19-Jan-2023, 12:45 AM)SnowLeopardFPV Wrote: When flashing the firmware, is the "Check Hardware compatibility" box ticked? If it is then untick it and try again.

You are a life saver. Thank you so much.
I can now turn it on. Now with this do you have any other tips with setting up?

I guess the next thing to do is to create a new model and then go from there. There are tons of YouTube videos on how to set up and configure OpenTX but the one linked to below is probably as good a place as any to start off with...

(19-Jan-2023, 01:05 AM)SnowLeopardFPV Wrote: I guess the next thing to do is to create a new model and then go from there. There are tons of YouTube videos on how to set up and configure OpenTX but the one linked to below is probably as good a place as any to start off with...

Thank you again so much!

No problem. I'm glad I was able to help.

Happy flying

I miss his videos badly. He was such a cool guy!

(19-Jan-2023, 04:37 PM)Kevin2112 Wrote: I miss his videos badly. He was such a cool !

Yeah. Still helping people with some of the great content he produced from beyond the grave. RIP. I can't believe that 5 years have passed already.