Can I install "TBS crossfire" on FlySky FS-TH9X 2.4G 9CH Radio?
Launch TBS Agent, and connect your Crossfire TX module to the computer with a Micro USB cable. If there is a new firmware available, click the "Update" button, it should only take a few minutes. Every time you update the firmware on your TX module, you also need to update the firmware on your RX.