Hi guys. I need some help. I have Sony Ericsson K550i mobile which is almost 5Years old. And recently it showing white screen. I took it to service center and they said software problem and flashed it. But with in hours my problem reverted. Again I took the mobile back to service center and they flashed it. And again same problem. This process continues for 6 times. Can any one please tell me how flash it at home. Can I install software on it. Please help me on this. Thank you..