[Q] Please help me with the CSC problem

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http://forum.xda-developers.com – my galaxy s2 is GT-I9100. i saw a jellybean update is on kies so i did the update. However after i did the 4.2.1 update, i found out my CSC was changed! before the jellybean update, it was TGY(HongKong) after the updates, it changed to XSP(Singapore)...WTF............. Also i cannot change the CSC anymore. i tried using CSC select to change my CSC, but it says "com.android.Precnfig not found on your device. Manual mode..." not only in phone, Kies also says my device is unable to do S/W upgrade or something. BTW i haven't done any rooting. i don't know why after i did the jellyb (HowTos)