This message was posted on behalf of Intel Corporation
I'll try to help you with this. Usually this guide does not have any issues as it's been tested by several users, my guess is that there might have been an issue on the process or the SD-Card you were using is faulty. So, my suggestion is that you flash your board (using the flashall method https://communities.intel.com/docs/DOC-25154) into a normal state and try the guide again, hopefully with a different SD-Card in order to avoid any issues.
Let me know how it goes.