i used mebitek rom so i decided to changed their adw laucher to adw launcher ex and i make it on the root system,i move the adw launcher and i replaced it adw launcher ex in the root system folder and when ived done and go back to home menu theres no one appears,all is black screen,so i power off my phone and try to recovery mode but theres no recovery mode,downloading mode ived only open so i try to flash in stock rom,il try gb 2.3.4,.5,.6 via odin the boot appear finished the recovery finished but when the system load theres nothing happen even il wait 20mins,the odin stock at the system..all of the stock rom version il try is cant load in the system...what can i do?please help me b4 il go to samsung authorized maintenance..