Naa ko 3gs. I want to upgrade from 4.1 to 5.0 or 5.1. . . i have seen a lot of tutorials about how to do it, however, I'm a bit afraid(basin masaup ko sa mga process nya or sequence).. can someone help me?(by sending a link for a friendly tutorial) or by recommending somebody or a store nga mo upgrade for a cheap but reliable service?.. THANKS a LOT ! !