i would reccommend you not to open the unit up. this will most likely cause damage from static electricity right away. What i would do is contact IFI at
info@ifirobotics.com and explain your problem to them, and try to determine a year issued or model # for the email. From there they pob could send you some help or even the origional firmware package and you might beable to flash it then. Just before you open up any controllers or IFI products, contact them first, you will regret it later if you dont.