Get the Durametric enthusiast version for $347, which permits registration of up to 3 VINs only. Sounds like a lot, but you'll pay for 1/3rd of it with this repair only. You will have other problems to use it for, assuming one reset solves this one (doubt it will), it's only a matter of time.
http://www.durametric.com/content/porsche-boxster-986.aspx
There's a good secondary market for these if you ever decide you're not using it enough or you sell your car. I picked mine up for $175 with 2 VIN slots left.