Samsung boot repair guide 1st step to last step requested to jtag expert

Dear all my respected experts please guide

Some days ago I recive j500 for boot repair
What I do see
1 write boot file all done but set not on
2 download dump from shell and write set on
But there is no network and imei null

So dear experts suggest me what mistake I do
In whole process AND WHAT IS THE WRITE PROCESS
TO DO FOR THIS
ALWAYS SAME PROBLEM OCCUR WHEN WRITE DUMP
FILE AND I RETURN HANDSET TO CUSTOMER
πŸ™πŸ™πŸ™ NEED SOME GUIDEπŸ™πŸ™πŸ™