User's Manual

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FS-lT4S
Digital proportional radio control system
10.7 Units
Use this function to change between Metric and Imperial mesurement systems.
10.8 USB Function
The system can be used with various computer based simulators via USB. To enable the simulator function
select "FS-iT4S emulator" from the menu. To disable this function select "none". (Note: when the emulator
mode is active the system cannot transmit data wirelessly)
10.9 Firmware Update
The internal software of the transmitter can be updated using the USB interface connected to a PC
computer. Once this function is activated, all functions of the transmitter stop. To avoid any loss of control
of the vehicle, turn its receiver off before entering this mode. A confirmation is requested.
When the firmware is updating, never disconnect the USB cable or remove the battery or the transmitter
will become unusable.
This function can be helpful only when connected with computer. Follow the steps as shown below:
1. Download and open the newest official software.
2. Connect a transmitter with a computer by USB cable.
3. Enter transmitter firmware upgrade menu and press OK to complete.
Connecting PC charging and upgrade the firmware, USB data transmission will not work