no one answers to a newb here?

hi guys plz answer me i have a samsung galaxy s2 plus I9105P
currently its on stock 4.1.2. i checked for OTA updates its not available here in Pakistan.
i want to manually update it to stock 4.2.2.
here are details..

AP: I9105PXXAMB9
CP: I9105PXXAMB3
CSC: I9105POXAAMB1.

PLEASE: tell me which .tar i download and flash on it please
if possible please link me to download

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