why does the author say, that he has tried swapping the flash chips around and it did not work? due to different hardware layouts maybe? As well, I assume that the replacement/donor module, that I have acquired, has to be 1:1 to be compatible with the car itself (i do not expect an answer to this). Please see a gallery of the water damage to my module below: I would really appreciate any input in this as going down the expensive route is not really something I want.

Thanks for your reply, McBryce, but it seems to me that repairing the device itself is too costly compared to the fact that they are easily copy-able, even though bound to the car. Some extent of the damage can be seen on the pictures in the bottom gallery - more the connectors then the board itself, but, ahh, well. I have done a fair bit of reading in multiple languages on this, and apparently the water damage, as well as over-heating of the MCU is a very common problem. There is even a service of copying the data over to a refurbished device. Now, my question is, how to transfer the data from one to another, or rather, whether I should bother with a JTAG with copying the processor config data and copying the flash, or just copying the flash alone will suffice.

I have read on forums that people have copied the config from the flash numerous times and that should be enough. Apparently the intel 28F400 chip is the one of importance and it has been mentioned in a multitude of posts in the russian speaking part of the internet. If this is so easily done (apart from some caveats that they lose the configs, knock on wood), I would like to find out how I can do it myself. Only thing i am puzzled by is - why copying the flash helps, but re-soldering the chip from one board t another - does not (and this is my extent of knowledge, maybe it is just fundamentals).

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