I have received strange breed from e-bay. Supplier claims that it is STK500 V2 and in fact it looks like one, but for the other side device has label saying it is JTAG ICE and it responds to avrdude as such. Could it been that someone smart put wrong label and firmware on innocent STK500 hardware? Is so - can it be reversed? There are no any text on PCB.
If you need bigger pictures they are here http://eopossum.blogspot.com/2011/05/wolf-in-sheeps-clothing.html
Beginning of the saga, testing and mail exchange with the seller http://eopossum.blogspot.com/2011/05/what-is-it-chicken-or-jtag-ice.html