V2.70/V3.70

1)enable the Current Sensor Moudle. you can monitor the current drop and battery consumtion.

2)NTSC mode, enble the compass.

Upgration manual:

Notes: the 2.3version is deteced a bug that OSD can only shows max 15.1V on "Plan battery" pin which is use to monitor the plane's main power battery. with this update, the OSD 2.3(and previous version only) can monitor up to 28V voltage (voltage on the Pin: "plane main battery").

People can also use this firmware to update their V2.0 that will allow "Mile / Kilometer" option.

Update PINs on OSD: