PX4 Optical Flow Kit errors

[mastermind999]

Hello.

I have a HobbyKings S500 QUADCOPTER and just brought a PX4 Optical Flow Kit and i encounter some problems with it. This is the product :
https://pixhawk.org/modules/px4flow

I am using ArduCopter 3.3 (don't know what RC, maybe the lastest)

I encounter a dozens of problems :

1. When i am running the DRONE from the battery i see no optical flow in dataflash logs at all.
2. When i am running the DRONE from the battery sometimes i see BAD GYRO HEALTH error and can't ARM because of this, sometimes not.
3. When i am running from USB, i can see OF logs in dataflash logs, but the EKF5.meaRng is just a flat line, even though i change the height of the drone, i see nothing. If the sonar was working i should see a more precise ALTITUDE, right?
4. When i am running from USB, i see "Bad LiDAR Health" and in QgroundController i see "pre arm check range finder" errors

DATAFASH LOG 1 (when i have the usb connected)
http://www.filedropper.com/2016-03-3007-10-304onusb

DATAFLASH LOG 2 (when i give current from the battery)
http://www.filedropper.com/2016-03-3007-10-053onbattery

I also had to change FLOW_ORIENT_YAW from 0 to -9000 in order to calibrate the sensor.

I have updated the firmware of PX4FLOW using the px4flow-klt-06Dec2014.px4 file (found here http://ardupilot.com/downloads/?did=118) where some says that is the best.

How it looks like now when running from USB :
[IMG1] IMU.GyrX with FlowX and BodyX
http://tinypic.com/view.php?pic=ak7sba&s=9#.Vvvli3o9DUc

[IMG2] IMU.GyrY with FlowY and BodyY
http://tinypic.com/view.php?pic=ak7sba&s=9#.Vvvl33o9DUc

[IMG3] EFK5.meaRng
http://tinypic.com/view.php?pic=2qjyd76&s=9#.VvvmUHo9DUc

Other images :
http://imgur.com/a/pMTqL

The dataflash logs are just tests, i was not flying drone, just moving it around from hand.

TUTORIALS :
http://ardupilot.org/copter/docs/common-px4flow-overview.html
http://diydrones.com/forum/topics/optical-flow-discussion-thread?commentId=705844%3AComment%3A2137861&xg_source=activity (Goro Senzai post)

Any ideea? Please.

Thanks.