This is a really interesting idea. Probably the older Kindles are the single largest users of (black and white at least) e-ink panels. To what extent are they

This is a really interesting idea. Probably the older Kindles are the single largest users of (black and white at least) e-ink panels. To what extent are they rootable and reflashable? If you do get this working please do write up your experience and follow up with some after photos.