Uploaded November 2020 | Updated September 2026, 3 weeks ago
In my first look video of the Eachine Razor, one of the main bad points for me was the small connectors for the servos on the wing joiners. In that video I said that when I find the appropriate connector, I'll let you guys know. Well, I've found them. I have included a link in the original video. But I decided to make another video too, so that people don't miss it.
These plugs in this link fit the small servo connector on the joiner. It's a sung fit, but all works fine. Buy a 1.25 female to 1.25 female pack and cut the wire in half. This will give you the connectors for both wings. With the one I received, I found that swapping the red and black wires gave the correct wiring order. But check with the etching on the in side of the connector.
Buy the connector here bit.ly/MrD_3983DPz
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.
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 on Facebook. Also, if you found my videos useful, and would like to leave me a little tip, you could always buy me a Coffee at mrd-rc.com/go/ko-fi
Thank you for your time, and don't forget to fly it like you stole it!
In my first look video of the Eachine Razor, one of the main bad points for me was the small connectors for the servos on the wing joiners. In that video I said that when I find the appropriate connector, I'll let you guys know. Well, I've found them. I have included a link in the original video. But I decided to make another video too, so that people don't miss it.
These plugs in this link fit the small servo connector on the joiner. It's a sung fit, but all works fine. Buy a 1.25 female to 1.25 female pack and cut the wire in half. This will give you the connectors for both wings. With the one I received, I found that swapping the red and black wires gave the correct wiring order. But check with the etching on the in side of the connector.
Buy the connector here bit.ly/MrD_3983DPz
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.
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 on Facebook. Also, if you found my videos useful, and would like to leave me a little tip, you could always buy me a Coffee at mrd-rc.com/go/ko-fi
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, I’ve 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)






