I just bought a MI8 SE with a global ROM but wasn't asked during set up to enter my location and also in the advanced settings the tap 'region' is missing. However, if I search for region in the options I can find it, but it is fixed on China (system). How can I change that otherwise? It gives me a lot of problems with Network security at work and online banking !!!!!!! Is there an option where I wont lose my warranty ?