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

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

1. Firmware Upgrade Tool

(1) Click to download the firmware upgrade Driver, only applicable to computer.

(2) Click to download the upgrade tool, only applicable to computer.

2. Upgrade Firmware

(3) Click to download the latest firmware:

   OTGT8S_LatestFirmware_V807.hex

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