I have tried the workaround and also now with the new version writing byte but there seems to be problem with the 0xff
It's like the receiving part does not get that byte and if I send 0xff to mcModule it does not receive it, or at least it does not show in the Read function.
This is what i tried to send to mcModule
0x65 0x00 0x08 0x01 0xff 0xff 0xff
but i only received
0x65 0x00 0x08 0x01