ok so i have a 3g and i downgraded to 3.1.2. but when i bought it into the shop and they told me that it only was half way downgraded. Is there a way to unlock it now they said i maybe can in a week but i feel like they are kinda trying to rip me off. Iwas wondering if i could unlock it with blackrain or rock and it will actually work please help is much much needed anything helps but ive tried just about everything thank you so much!