Did you try personally to upgrade back (hardware) to 4.6 BL ???
Where can we find this 4.6.bin file??? Look for it but impossible to find till now!
Also never find succefully report, it s like a myth :-) I would like give it a try, I have hard wires the a17 track and deviated it. Now, I only have to open the antenna cover to reach the a17 point....