What determines if an ecm will be bricked when flashed? I know there can be a lot of factors that play into it. Here's the example; the bricked ecm's hdw #12583660 and service number 12586242. The original tune was a 12585950 OS and the tune that bricked it is 12592618. Both are 1MB tunes and both are ls1b controlers. Why did flashing this tune onto it brick the ecm? I'm trying to avoid this in the future. Tunes attached.