UBSAN X4 STAR FPV User Manual page 3

Do not calibrate the compass in a strong magnetic field
Do not carry ferromagnetic materials with you while calibrating the compass,
such as keys, cell phones, etc.
Horizontal Calibration
Horizontal Calibration is required when the quadcopter drifts during flight.
Calibration Procedures:
Push the left stick to the most right side, and move the right stick from left to right quickly
until the 4 LED indicators blink slowly.
Calibration is completed when the 4 LED indicators remain solid.
CAUTION:
For safety, the quadcopter is default set to CAN NOT FLY WHEN NO GPS. If you prefer to
fly when GPS is not available, please reset the value as instructed below before using.
Pull the throttle stick to the lowest position and press the Elevator stick for 1.5 seconds to
enter into the MAIN MENU interface. Push the Elevator stick up/down to select "Fly When
no GPS", push the stick right to enter into the " Fly When no GPS" interface, select "YES".
The Default Setting is "NO".
Select "Exit" to exit.
0:08:49
M2
MAIN MENU
Set Reverse
Set Sensitivity
5.8G Frequency
Set Manual
Fly When no GPS
Show Version
Exit
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2016 Hubsan
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0:08:49
M2
Fly When NO GPS
Exit
YES