sorry for a noob question, does samsung malaysia do the froyo2.2 upgrade for us? by sending back our phone to the customer service?

can we still read and type chinese wordings after upgrade our firmware through kies?

OCLF suck?
just download a file call RyanZa's OCLF2.0 from market place..
It's just show 'Root Device Recovery 2e" and "check Free Space" available, is that just only by click on the 'Root Device Recovery 2e" and click "fire it up". after that it's all done rooting process?
appreciate from all the sifu here, anyway my version is
PDA:I9000DXJG4
PHONE:I9000DXJG4
CSC:I9000OLBJG4

anyone knows how to check and clean personal data section in taskmanager?
I tried deleting stuff from files folder but that didn't effect the personal data section.

seeking for help..
just download OCLF from market and press fire it up, but things it's need me to press volumn up+home+power to continue. but this 'three button' mode is not fuction in my my phone...
so then i i removed the oclf and the update.zip from my sd card..
now the problem is, is that my phone considering alr been root and does it still can upgrade to froyo2.2 via keys?
hope all sifu can understand what i m trying to explain.

sorry for out of topic a while..
anyone experience always miss call when using 2g? at least had to call twice only can make the phone ring..
but when using 3g, then everything ok..

thanks for reply...