I bought this for troubleshooting DSC on an E39. The included installer includes INPA and a few other tools. I had a problem installing it on a tablet, but the seller was very responsive (and quick) to emails. We ended up having a live session to go through the configuration. I ended up installing on another laptop and the provided installer made the installation go smoothly and there were no issues. The key point here is the OHP tool support. Your support was worth the price.
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