Brightness - can't change L930

I can't change brightness volume. Low, medium, high and automatic have the same brightness volume.

If i want change brightness - settings not working
After hard reset - cant change brightness
After soft reset - cant change brightness
After update software - no change

I can't connect my phone to windows device recovery tool - i tried it but program told me "error 0x00000067 (Thor@NotResponding)" he can't find him.

My firmware is :10.0.14393.5

Any idea???

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