can anybody help please, i have a e rex pro dme4 which is locked on semi-auto. the gun was bought in the uk and they don't like full auto guns over here

.a friend has a mongoose2 which has the same board in it and he has all the modes,the only thing i can see is a diode fitted to the screen pins which i tryed but nothing.i don't know if the board can be reset or if i will just have to put up with it, if anybody has any ideas on how to unlock it so i can get all the modes

that would be great.