Look at my post in this thread:
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Scroll down on this page and look for the youtube video about the backup and what you need to do. But don't proceed when I say Rogero Auto patcher that's because we are talking about repatching you dump and reflashing it. This is meant for people who are not using or skipping FSM dongle(factory service mode). You should be concern about the step that is talking about backing up your dump and using the software posted to validate your dump. I'm not sure which direction your going afterwards.
But would recommend you to make several dumps and validate them and compare them. Making sure they all display ok and all the same info.