I followed the guide to change the rear panel everything (but one) went very well. After assemble it now I get only white screen all the time, I´ve tried restore with iTunes, tried restore with DFU mode, it keeps making those sounds when you press the power buttom, I also can unlock it by "slide to unlock" but my screen is all white. Is my lcd gone? Should I order a new lcd display? Or it is a firmware problem? Thanks