Attention: If you can not download the files or zip file below, please click the website below to download the files you need.  

http://www.radiolink.com.cn/firmware/transmitter/T8S(BT)/


1. Firmware Upgrade Tool

Click to download the firmware upgrade Driver, only applicable to computers.

Note:

Please install the driver when using the computer parameter set APP for the first time.
For the T8FB/T8S upgrade driver installation tutorial, please click the article below to view it.

If the computer is Windows 7, 8, or XP system: https://www.radiolink.com/newsinfo/457948.html?templateId=145718

If the computer is Windows 10 or 11 system: https://www.radiolink.com/newsinfo/475968.html?templateId=148964

WinZip(design by 360, free)

If you do not have the WinZip Tools to decompress upgrade files, please click to download and install the free WinZip Tool designed by 360.

T8S(BT) Firmware

(Please upgrade by Windows 7,8,10,11 or XP computer, cannot upgrade by Apple MAC computer)

2. Upgrade Firmwares

（1） The latest firmware


The firmware version can be checked on the parameter setup APP(SYSTEM menu) in mobile or computer(PARAMETER at the bottom right). If the wrong firmware is accidentally flashed and the system of T8S(BT) is crashed, please remove the cover and disconnect the battery and connect again. Then upgrade the firmware downloaded below.

How the T8FB/T8S update the firmware?

① The current batches of T8S(BT): Long press the power button for 1 second and release to turn it on.

If the wrong firmware is flashed and can't be powered on or the LED indicators flash abnormally. Please download the V846 firmware to repair.

Click to download the latest firmware:

②  The previous batches of T8S(BT): Slightly touch the power button to turn it on.

If the wrong firmware is flashed and can’t be powered on or the LED indicators flash abnormally. Please download the V810 firmware to repair and no other firmware can be flashed afterwards.

Click to download the firmware: T8SBL_LatestFirmware_V810(OldVersion1s).hex

Introduction about V846

1) The AUX-CH (CH5 to CH8) can be set as SwA, SwB, VrA, VrB/SwC, NULL, and Lock-C.

2) Compatible with the parameters setup APP versions of Android mobilephone APP V8.5(or above) , Apple mobilephone APP V4.0.0(or above), or computer APP V4.9(or above).  

(2) Firmware for turning off the Trim Function


Click to download the firmware for turning off the Trim Function:

Attention: After upgrading this firmware, the Aileron, Elevator, Throttle, and Rudder trim buttons' mechanical adjustment functions will be canceled. It is designed for remote controllers that control logistics, fire fighting, and short-distance unmanned delivery vehicles or drones.

(3) Factory Default Firmware

Click to download the factory default firmware:

Attention: please use the V603 parameter setup APP if the firmware version of your transmitter is V826

How to update the firmware of T8S?