I had the same issue not being able to ssh into the shipped OS. While updating to the latest OS, I ran into similar issues writing the latest version to the eMMC memory and also thought I bricked my board. The external SD port and the eMMC Flasher images really are a "get out of jail free card."
This board is a beautiful little piece of hardware. I'm really looking forward to tinkering around with it.
This board is a beautiful little piece of hardware. I'm really looking forward to tinkering around with it.