Hello, please can somebody help me, I have one Sony Ericsson k550i and after I unlocked phone all are working normal except sound and network, instead of sound I hear just a noise like "sssssss" , about the network can not connect , phone are searching but can not find any network. I put all firmware again, fs file and customization pack and still the same, also I put the original T mobile file and still the same ( phone was locked in T-mobile Austria (Österreich)). Please if you can help me let me know! Thank you!