Back Button Problem

[touno71]

Hello i have a big problem, since yesterday my back touch doesn't work.
i'm in stable rom 7.2.1 , home touch and the other touch at the left works, only the back touch that doesn't work.
Is there a solution?

 

[Gabi Roman]

FLASH NEW VERSION 7.2.3.0 EU

 

[touno71]

I have done flash, same thing...
Perhaps the touchscreen In this side
I don't know what to do

 

[touno71]

Is there a solution to recalibrate this button, or is there a safemode for note2?