sky_no_limit

hello! i got used avic F700BT. I tried to bypass it with parking brake grounded as well as relocated mute wire grounded. Bypass doesn't work. I remember I've done that on my avic d3 and everything worked flawlessly, The problem is that even when i am not driving all of my icon stay greyed out. I don't understand what the reason is, what should i do, please help! thank you!