Just a note to whet your appetites, I've successfully gotten arbitrary code execution working on my Archos 605wifi with firmware 1.7.13.
And for bonus points, you don't need to open your Archos up or a access to a docking station -- you can do it all with a stock model.
I'm supposed to be heading out in a bit, but I'll be posting example code in the next day or so..

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