[Q] HW buttons problem - Android Software/Hacking General [Developers Only]

Good day, I have tablet GoClever Tab A103 and it's got multifunction buttons, holding volume down is homescreen and holding volume up is app menu. After update to android 4.0.4 are buttons inverted, holding volume down is volume down and 1 click is home Please how I can repair this?
BTW. Android 4.0.3 is function normally.
(Sorry for bad english, I'm Czech.)

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