http://www.4shared.com/rar/rQm6FrDh/ZTE_S160_NEW_VERSION_UNLOCKING.htmlcdma zte s160 16 mb unlock flash file
this file is 8mb thanks for
try this file your problem 100% solve
http://www.4shared.com/rar/T8K4ZM0x/REL_S160_UNLOCKING_MARCH_VERSI.html
and
http://www.mediafire.com/download/xkmntn9ckhdawmr/S160+16mb.rar