Get a cheap JTAG debugger to play around with. Basically this entire hack hinged on the fact that he was able to connect via JTAG to the drive controller. Obvio

Get a cheap JTAG debugger to play around with. Basically this entire hack hinged on the fact that he was able to connect via JTAG to the drive controller. Obviously it took a lot of knowledge to understand how to interpret the data he got, but learning a JTAG debugger is a good start.