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!

The bypass isn't done properly, you missed something.

Time to go back to the Bypass sticky and review what has worked with other folks with the same problem.