Thanks GL for your feedback, and you entirely right abput BMW dealers, they are not instructed in how to resolve this issues. I did further research in the area and I was able to find a small repair shop that was able to help me out. I took both FRMs and found out the program of the original FRM coding got corrupted due to battery change, however it was not bricked. The new one the coding was erased during the failed flashing as I expected and lost everything but it was not bricked either. He was able to repair and retrieve the coding from the old FRM, and flash the coding from the old FRM into the new one. Now everything is working and I end up having an extra FRM. I definately went over my head, but it is a lessoned learned and as bonus a found a good garage to give me some help when need it.

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2012 E70 X5 xdrive35i