X1R-C firmware v18.1

1.The customer can set RF ID. Operation: press the CH and GR button simultaneously and power it on to enter the RF ID setting interface. Short or long press the CH button to add the ID value while short or long press the GR button to decrease. Power off the flash trigger after 5s, and ID value can be set and saved. Then, power it on, and the ID value will affect RF reception.<br>2.To solve the problem that Zoom 135mm and Zoom 200mm cannot be set on Canon 600EXII-RT.