I'm pretty sure you've probably already tried this, but have you tried to get the service tech to follow these instructions? link
When I went to sync my kpro to my immobilizer, the tech and service manager came out and said it couldn't be done. I confirmed they had the HDS tool and did the immobilizer sync myself using the instructions provided by Hondata. I left them a copy. They said this way was much easier compared to the way they 'normally' do it.
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