Uploaded November 2021 | Updated September 2026, 3 weeks ago
π patreon.com/MrD_RC π MrD-RC.com
In this video I show how to set up receiver redundancy for FrSky receivers. I'm demoing this using ACCESS receivers and the ETHOS firmware. But, the process can be done with ACCST and OpenTX. The process is extremely similar, and I explain how to perform it for ACCST and OpenTX. I also show how we can test the redundancy is working on the receivers.
βοΈ Contents βοΈ
00:00 Introduction
00:47 What is receiver redundancy?
02:48 What do you need to use receiver redundancy?
04:33 Binding the receivers to the transmitter
08:43 Testing the redundancy is working
11:55 Connecting three receivers
12:51 Setting up the redundancy with ACCST
13:49 Conclusion
Thank you for watching this video. Time is precious, so I hope that you got some benefit from this video. If you have any questions, please leave a comment and I'll do my best to answer. Please try to keep questions relevant to the video in, as they may also help others who have the same question.
βοΈ In this video βοΈ
βοΈ FrSky Tandem X20S transmitter: bit.ly/MrD_3x6n6JL
βοΈ FrSky SR10 Pro receiver: bit.ly/MrD_3DFQeKF
βοΈ FrSky R9 SX receiver: bit.ly/MrD_3bJCvGE
βοΈ Help other RC pilots find this video βοΈ
If you found the video useful, I'd appreciate a thumbs up. This will help YouTube share this video with other RC pilots who may find it helpful. If you would like to get more videos when they become available, please subscribe and click the notifications bell icon. If there are links above, they may be affiliate links. If you click them, it will help me and my channel at no additional cost to you.
βοΈ Supporting me and other resources βοΈ
π© There are more tutorials on my web site at https://www.MrD-RC.com.
π© You can also join like-minded people at the Fixed Wing RC Rebels group and INAV Fixed Wing Group on Facebook.
π© Liking the video, subscribing, and clicking the bell icon can help greatly. This shows YouTube that the video is helpful, so it will be shown to more people, who may have the problem dealt with here.
π© If you found my video useful, you can become a Patreon at patreon.com/MrD_RC
π© If you prefer, you could always buy me a Coffee at mrd-rc.com/go/ko-fi
π© I also have merch at mrd-rc.creator-spring.com This include branded items as well as general fixed wing RC apparel.
Thank you for your time, and don't forget to fly it like you stole it!
π patreon.com/MrD_RC π MrD-RC.com
In this video I show how to set up receiver redundancy for FrSky receivers. I'm demoing this using ACCESS receivers and the ETHOS firmware. But, the process can be done with ACCST and OpenTX. The process is extremely similar, and I explain how to perform it for ACCST and OpenTX. I also show how we can test the redundancy is working on the receivers.
βοΈ Contents βοΈ
00:00 Introduction
00:47 What is receiver redundancy?
02:48 What do you need to use receiver redundancy?
04:33 Binding the receivers to the transmitter
08:43 Testing the redundancy is working
11:55 Connecting three receivers
12:51 Setting up the redundancy with ACCST
13:49 Conclusion
Thank you for watching this video. Time is precious, so I hope that you got some benefit from this video. If you have any questions, please leave a comment and I'll do my best to answer. Please try to keep questions relevant to the video in, as they may also help others who have the same question.
βοΈ In this video βοΈ
βοΈ FrSky Tandem X20S transmitter: bit.ly/MrD_3x6n6JL
βοΈ FrSky SR10 Pro receiver: bit.ly/MrD_3DFQeKF
βοΈ FrSky R9 SX receiver: bit.ly/MrD_3bJCvGE
βοΈ Help other RC pilots find this video βοΈ
If you found the video useful, I'd appreciate a thumbs up. This will help YouTube share this video with other RC pilots who may find it helpful. If you would like to get more videos when they become available, please subscribe and click the notifications bell icon. If there are links above, they may be affiliate links. If you click them, it will help me and my channel at no additional cost to you.
βοΈ Supporting me and other resources βοΈ
π© There are more tutorials on my web site at https://www.MrD-RC.com.
π© You can also join like-minded people at the Fixed Wing RC Rebels group and INAV Fixed Wing Group on Facebook.
π© Liking the video, subscribing, and clicking the bell icon can help greatly. This shows YouTube that the video is helpful, so it will be shown to more people, who may have the problem dealt with here.
π© If you found my video useful, you can become a Patreon at patreon.com/MrD_RC
π© If you prefer, you could always buy me a Coffee at mrd-rc.com/go/ko-fi
π© I also have merch at mrd-rc.creator-spring.com This include branded items as well as general fixed wing RC apparel.
Thank you for your time, and don't forget to fly it like you stole it!









![Updating the ETHOS firmware
[NOTE] There is a more recent video on how to update ETHOS here: https://youtu.be/5Y351hjF5ZA
In this first video of the Exploring ETHOS series, we look at how to update the firmware on your FrSky Tandem transmitter. This is a fairly simple process, if a little on the manual side. But theres nothing really too daunting. Maybe in the future well see a simpler process using a desktop companion. But until then, this is the update process.
If you struggle with computers, Iβve recorded a longer, more in-depth video that may help you with this process. Please feel free to watch that video here https://youtu.be/1RfEdgRIwcQ
** Update **
The naming of the SD card and FLASH drive contents is changing. From version 1.0.11 onwards, if you are using a Tandem transmitter (currently X20 and X20S) you should download the TANDEM_FLASH and TANDEM_SD files.
Between 1.0.6 and 1.0.10 they had been named X20_SD and X20_FLASH, which caused confusion. People thought it was just for that transmitter, and not for the X20S also.
** In this video **
- ETHOS GitHub Releases https://github.com/FrSkyRC/ETHOS-Feedback-Community/releases
- FrSky Tandem X20S https://bit.ly/MrD_3x6n6JL
** Contents **
00:00 Introduction
00:42 Checking the current firmware version
01:40 Getting the transmitter in to bootloader mode
02:13 Downloading the new firmware
04:11 Plugging in the transmitter and finding the USB drives
04:59 Updating the Flash memory
05:26 Updating the Micro SD Card
05:50 Performing the actual ETHOS firmware update
06:53 Conclusion
** Help other RC pilots find this video **
If you found the video useful, Id appreciate a thumbs up. This will help YouTube share this video with other RC pilots who may find it helpful. If you would like to get more videos when they become available, please subscribe and click the notifications bell icon.
** Supporting me and other resources **
- There are more tutorials on my web site at https://www.MrD-RC.com.
- You can also join like-minded people at the Fixed Wing RC Rebels group and INAV Fixed Wing Group on Facebook.
- If you found my video useful, you can become a Patreon at https://www.patreon.com/MrD_RC
- If you prefer, you could always buy me a Coffee at https://www.mrd-rc.com/go/ko-fi/
- I also have merch at https://mrd-rc.creator-spring.com/ This include branded items as well as general fixed wing RC apparel.
- If there are links above, they may be affiliate links. If you click them, it will help me and my channel at no additional cost to you.
Thank you for your time, and dont forget to fly it like you stole it! Updating the ETHOS firmware](https://i.ytimg.com/vi/XkVOgo5UUt4/mqdefault.jpg)
