Sony xperia c3 dual s55t

Hi! So I bought this phone on ebay and it appears to be from China. I updated the Software with Sony PC Companion and then I noticed that Google Play was not working anymore. Non of the Google applications were working.

Also, I know that there is a lollipop update for the my Xperia C3 dual s55t , but it did not update it. I still have kitkat.

Any tips on how to bring back my Google Services? Or how to upgrade it to lollipop and make Google work?

Thank you.

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