Program H777? But sometimes it is fails to program. Do you want to know the reason?
I think maybe caused by the following reasons:
Program failed reason 1:Download the wrong USB driver and wrong software.
Install the right software and the USB driver. But please notice choose the right bit and the system.
You can find it from the Computer system information.
Program failed reason 2:Your radio is still on before you insert the cable.
Let your radio off. Plug the cable tightly both side and then turn on your radio. Then read the data from radio.Then It will work.
Program failed reason 3:The radio is out of power.
Make sure your radio has enough power,Test your radio power before you try to program it.
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