help samsung s4 copy mt6572 blank screen

samsung s4 hang because monkey virus. I use cwm format instead hang android logo. try flashtool scatter mt6572 even death. try using scatter MT6572_JDQ39_540x960_5in_ live longer but a black blank screen. I try to change the his Uboot, flash ok but did not want to live. bro master may have a solution for this?