I cannot tell you what exactly to you need, but I suppose you need some software and of course a cable to connect it to the PC. However, I don't know if you can find those things availble in the market. So, I propose to go to an authorized service center and do the upgrade. It will cost you nothing and it is much more safer than to do it by yourself.
authorized service center and do the upgrade. It will cost you nothing and it is much more safer than to do it by yourself.