Lancer Tactical ETS reset help needed

[Morty]

Does anyone know how to reset the electronic trigger on a Lancer Tactical M4 ?  I think the gearbox is made by Lonex 

here is my problem, the weapon will fire 5 five round bursts in semi auto then stop until the battery is replaced, in full auto it will fire for 5 seconds then stop

cant get any response from Lancer Tactical

Thanks