Originally Posted by rastik
I've found a discussion of yifanlu and ichinomoto, wherethey weren't able to overcome that:
Nasty! You might have to order a JTAG cable now (and find the JTAG pads on the PCB).
Unless you wish to explore JTAG recovery for educational purposes, if you have better things to do with your time, I suggest buying a replacement and keeping this one for parts (eInk screen, battery, etc.).