Ensure you are in "Firmware Update" mode before connecting. If the radio is in normal mode, the software cannot write to the chip.
The FlySky FS-i6S is a solid budget radio, but updating its firmware is . When it works, it adds valuable features. When it doesn’t, it can be frustrating. flysky fs-i6s firmware update
The software should show the device is "Ready for update." Click Completion Ensure you are in "Firmware Update" mode before connecting
Ensure your FS-i6s has at least 50% battery life. A power failure during the flash process can corrupt the bootloader. When it works, it adds valuable features
Before updating, export your existing model memory to an SD card (if you have one). After the update, import it back. This saves you hours of re-programming dual rates and expo.
If your update failed and the transmitter now only shows a white screen or won't turn on at all, do not throw it away. Try the "Emergency Recovery."