Been having mystery problems with my 2003 Jetta AWP (1.8T/5-speed/Wolfsburg) for about a year intermittently. Been to multiple shops and so far no one has been able to find a definite cause. The latest shop suggested the ECU may be at fault so I grabbed one from the local pull-a-part. The ECM I pulled out of my car had a date code of 2007 so obviously some one has done this before. The part numbers are the same (06A906032LP) on both ECM's and the one I pulled was from a 2003 AWP GL. Plugged the junkyard ECM up and the car will start and immediately die. I assume due to the ECU flash being incorrect. I already have a cable that I use to tune my Triumph (much less complicated) so I find this software and give things a go.  Which leads me to my questions...

Is there a way to copy my Immobilizer info from the potentially faulty ECU so I can just toss it into the 'new' one?

I wouldn't think the tune itself on the faulty ECU is bad as it runs fine 1/2 the time but just in case I'd prefer to just run a fresh flash, is there an updated file that works well on a completely stock AWP? I'd found one that was suggested but when I attempted to flash it in the program gave me an error due to the Immobilizer so I assume I need to address that first?