[Q] problems with Star N800 Mini Note Android 4.0 MTK6575

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http://forum.xda-developers.com – At first hello to all. I bought this phone and I have some problems with it. First of all, I cant change default notification sound (Pizzicato), and when i change other sound from the list, after rechecking, "Pizzicato" is still default sound Second, sometimes i cant send files via Bluetooth (in the meantime i can recive files from other phone). Third, how can I rooting this phone. Thanks for help. (HowTos)