ROBAN HSM Series +FS6i Factory Reset | Radio, Flight Controller & Calibration

If firmware recovery alone did not solve the problem, this walkthrough shows the full factory-reset and calibration process for the ROBAN HSM Series helicopter. Follow the transmitter reset and receiver binding, flight-controller firmware 4.5.6 installation, mandatory parameter backup, model-default restoration, receiver selection, sensor calibration, swashplate setup and final flight adjustments. Key setup points: • Set every rotor blade to +2° at the centre position. Use a pitch gauge rather than judging by eye. • The additional blade-matching check applies to helicopters with three or more blades. • Adjust the linkage nut with small pliers or a 3 mm open-end wrench while leaving the linkage connected. • For final drift checks, use Angle mode in windless conditions. GPS position hold can hide slight drift. • Keep transmitter trims neutral. Land and disarm before changing software centre trims, use steps of no more than 10 µs, and disable Servo Passthrough before flying again. English narration and subtitles. CHAPTERS 00:00 Introduction 00:10 Transmitter reset and receiver binding 01:25 Firmware recovery and mandatory backup 01:49 Flash firmware 4.5.6 02:01 Restore model defaults and check receiver 02:38 Remove the mechanics and disconnect 03:03 USB power and six-position accelerometer calibration 04:02 Gyroscope and level-horizon calibration 04:21 Servo passthrough and swashplate levelling 04:49 Set +2° blade pitch with a gauge 05:10 Three or more blades: match the pitch 05:36 Adjust the nut with the linkage connected 05:56 Finish adjustment and reinstall the mechanics 06:22 External Mag 1 compass calibration 06:55 Rotate through all three axes and reboot 07:28 GPS takeoff and windless Angle-mode checks 08:07 Land before adjusting: maximum 10 µs per step 08:24 Correct forward and backward drift 08:40 Correct sideways drift 08:55 Repeat the flight check and finish #ROBAN #HSM #rchelicopter download software here: https://github.com/RobanModel/RobanHe... ```