I have v600i which is dead the phone has traces of water mainly in charhing connector but the body looked clean .i clean very well but still dont power on ,when try to power on black display and a thin white line on top of l.c.d. if problem is software ,which free soft to use and where to get plus the flash files and also how to flash because i have never flash this phone before i have ufs2 and ufs3 only.PLEASE HELP