http://www.healtech-electronics.com/docs/GPDS-T01_Manual_en.pdf
Reset
If some gears are not indicated correctly, reset the unit and setup it up again.
If you have a SpeedoHealer (or other speedometer calibrator) and you change the calibration factor, probably you have to reset the GIpro and set it up again.
Cut off the power of the unit 6 times in a row, while the GIpro display is counting up and shows 3, 4 or 5.
You can power on/off the display by flipping the engine RUN switch on/off.
On the next power up, the display will count backwards (6 to 1).
The memory is clear now and you can perform the Setup procedure.
Troubleshooting
Disconnect the GIpro connector and check whether the pins are broken, bent or pushed out of position. Reconnect the plug, and make sure that all connections are good and the connector is fully seated.
Make sure the GIpro plug is not loose in the diagnostic connector. Use the long cable tie supplied to secure the plugs together.
If you can not execute the Setup procedure, your battery might be old or weak. Charge the battery or connect another battery using a jumper cable.
If some gears are not indicated properly when the engine is running and clutch is released, reset the unit and setup again.
If the problem persists, your clutch might be slipping