Hi I updated my nandx perfectly with my new ck3i, I unboxed my brothers nandx and plugged it in and it was erasing the blocks and got stuck on block 4, I get failed to autobaud untill I do the power on and off then I get failed to read device signiture do I want to proceed, then error says failed to communicate, and other times I get failed erasing block 1 have I messed this one up 
thanks in advance
thanks in advance