Firmware Update Notice

Product: Spektrum NX Transmitters (SPMR6775, SPMR6775EU, SPM6775, SPM6775EU, SPMR10100, SPMR10100EU)

Issue:Connecting through WiFi and checking for updates may cause some transmitters to lock up, requiring the transmitter to be

restarted by pressing and holding the power button for 7-10 seconds, or unplugging the battery and reinstalling.

What To Do: Customers should update the transmitter ﬁrmware through the USB cable.

Check the ﬁrmware version of the transmitter by accessing the “About/Regulatory” menu in the System Setup list. The version is

displayed at the bottom of the Serial Number screen. If the version number is prior to v3.03.03, follow the instructions below to

download and update the ﬁrmware.

IMPORTANT: The transmitter must be registered at www.spektrumrc.com prior to attempting to download the ﬁrmware update ﬁle.

1. Download the latest ﬁrmware update for your transmitter from www.spektrumrc.com to your PC or Mac. The ﬁle should be

named SPMTX.SAX.

2. Power the transmitter off and on.

3. Connect the USB cable to the charge port on the transmitter and to your PC.

4. Press the scroll wheel to access the Function List menu.

5. Scroll down to the System Setup menu, and select YES to disable RF.

6. Scroll down to USB Settings.

7. From the USB Settings menu, select Access Internal Storage. After several seconds, your computer will recognize the

transmitter as a removable drive.

8. Copy the updated ﬁrmware ﬁle to the transmitter from your computer.

9. Power off the transmitter and disconnect the USB cable.

10. Power on the transmitter. The transmitter will perform the ﬁrmware update on startup. This process may take several minutes to

complete.

We apologize for this inconvenience.

Horizon disclaims all liability and warranties for any consumer failing to act upon this product notice.

Product Notice

Spektrum NX Transmitters (SPMR6775, SPMR6775EU, SPM6775, SPM6775EU, SPMR10100, SPMR10100EU)

January 29th, 2021

Version number

The Horizon Hobby logo is a registered trademark of Horizon Hobby, LLC.

The Spektrum trademark is used with permission of Bachmann Industries, Inc.

All other trademarks, service marks and logos are the property of their respective owners.

Created 02/2021 SPMR6775, SPMR6775EU, SPM6775, SPM6775EU, SPMR10100, SPMR10100EU 201505.1