I have an original ecu that I bought as a spare, and a very nice gentleman on here helped me clone the Immo from my car so that I can run it as a plug and play spare. I am having trouble writing anything to that file and "truly" correcting checksums.

The ECU is an EDC17CP14, prod # 03L906019CM, software version 513679 I am using Winols 2.24 with the Bosch MED17 plugin

This is what I have done so far.

Stock ECU (ECU A) is from my car and is stock, unmodified. I have the Ori files from it.

Spare ECU (ECU B) I have the Ori files form it (say file B1), then I had the IMMO cloned to match ECU A (file B2). Later ECU B with IMMO cloned and I removed the tprot (file B3). Checksums were performed by others for files B2 and B3 because I couldn't get mine to work. I am now working with file B3 and I would like to start learning how to tune by modding maps.

My questions is:

When working with file B3, do I use that alone as the basis to acquire the correct checksums, or do I first open file B1 (stock version of this ecu) and insert File B3 as a version and then correct checksums?

Please note that file B3 has had the checksums corrected and runs fine in my car, but if I open file B1 and bring B3 in as a version, Winols says that the checksums need to be recalculated. Is that right?

Its also worth noting that the tool I am using to read/write does not correct checksum, so I am reliant on that being done by Winols or a third party program if need be.

I've posted this on a couple of forums, so sorry if this is redundant. Im desperate! :D

I would great appreciate any help on this.

Thanks,
Sbvr4