samsung win Clone i8552 mt6575 no service hide sim management
 

i have 2 Units with same problem No Signal after flash.
i read bin file from working phone and wrote to these 2 Units but no luck. Then I make factory backup by Droid tool and wrote again to these phone by sptool but still same.

i format whole flash chip and then wrote again working files, but still same.

any other solution ???