So.....long story short is that I did the navigation hack by connecting the pink wire from the J50 into the white wire from the p1 (wireloom side) and also grounded the parking brake wire (nav unit side).

Well, guess what....navigation wont load. I get the error, "A program cannot be loaded. Please consult to a lexus dealer." with some Japanese underneath that.

I tried reinstalling the wires correctly but still no go. I've disconnected the battery....pulled the tv1 fuse....tried to reinstall the firmware but it doesnt ever seem to do anything but tell me a program cannot be loaded.

Also I did the diagnostic check using the info button hold down/light flashing trick. The first error it shows me is: Navigation - NCON. If i clear the codes or memory and recheck it tells me: Navigation - NRES.

Im at a loss....any help???

 

Are you sure you did the white wire with silver stripe?(p1) Because there is a white wire with silver stripe and a black strip together also.(p1) Very easy to make a mistake between the two. And the the red wire on the j50 connector is grounded on the nav unit chassis. ncon= no connection...but the red wire ground wont cause that error. I am very sure you messed up at the j50/p1 side of the wires. Or you might have a loose connection at the wire connector into the nav unit (the harness that snaps into the back of the nav unit).

 

Yeah I'm certain it's the right wires. I guess I'll try hookin it back up to stock and cleaingr those codes or removing the fuse again. I don't know what to do...