VR Gyroscope Windows Phone - Problem

Hi,

I have a problem with the script gyro camera.
Roll axis is reversed as it means tilt the phone upwards it goes down.
For a long time I try to solve the problem

I can not solve the problem please help !

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class HeadTrack : MonoBehaviour
5. {
6.     private bool gyroBool;
7.     private Gyroscope gyro;
8.     private Quaternion rotFix;
9.     private Vector3 initial = new Vector3( 90, 0, 0);
10.      
11.     // Use this for initialization
12.     void Start()
13.     {
14.         Screen.orientation = ScreenOrientation.LandscapeLeft;
15.         Screen.sleepTimeout = SleepTimeout.NeverSleep;
16.  
17.         gyroBool = SystemInfo.supportsGyroscope;
18.  
19.         Debug.Log("gyro bool = " + gyroBool.ToString());
20.  
21.         if (gyroBool)
22.         {
23.             gyro = Input.gyro;
24.             gyro.enabled = true;
25.  
26.             rotFix = new Quaternion( 90, 0, 0.7071f, 0.7071f);
27.         }
28.         else
29.         {
30.             Debug.Log("No Gyro Support");
31.         }
32.     }
33.  
34.     // Update is called once per frame
35.     void Update()
36.     {
37.         if (gyroBool)
38.         {
39.             var camRot = gyro.attitude * rotFix;
40.             transform.eulerAngles = initial;
41.             transform.localRotation *= camRot;
42.         }
43.     }
44. }