Forcing the KH1 into "Firmware Load Required" Mode
To force the KH1 into a state that it requires a firmware download,
-
Switch off the power supply or disconnect the KH1 from its power supply and batteries for at least 30 seconds.
The KH1 microcontroller may continue to function with very low voltage,
the current draw is quite low,
capacitors take a while to discharge,
and the microcontroller must perform a power-on reset to enter its bootstrap loader.
- Click Close Port.
- Reconnect the power supply.
-
Press and hold the 2 button and switch on the KH1.
"UTILITY?" should appear in the LCD display.
-
Click
Test Communications.
You should see a status message indicating that the KH1 is ready for firmware load.
-
Select
Send Firmware
on the
Firmware
tab.