The process of downloading the FrSky X4R/X4RSB Telemetry System Firmware 150526 driver should begin automatically after a few seconds. If this does not occur, click on one of the links below (we recommend downloading the FrSky X4R/X4RSB Telemetry System Firmware 150526 driver from the primary server - this is the manufacturer’s FrSky official website). If the download still fails to run, check whether your anti-virus software is not blocking the connection to the manufacturer server of the FrSky X4R/X4RSB Telemetry System Firmware 150526 diver.