I'm not sure how available this info is on the forum, so I'll share a story. I was flashing my PCM on the fly before work, and I'm pretty sure the connection was interrupted. Nothing would work, PCM wouldn't respond, and I heard clicking in the engine bay. Engine just wouldn't start, but it would go into accessory mode. Anyhow, I was able to close the DHP program after 10 minutes and I went to write the PCM again. It notified me that the last write was interrupted, and asked if I'd like to Recover. So I did, and it worked. I couldn't find that online with my quick searching. And it doesn't try to recover until you close the program and restart.
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