I finally got the update to take and it worked beautifully… Until I updated the source.list and installed the update via apt-get. What resulted was an updated system, but all network connections disabled. No WiFi or USB-ETH. I ended up having to start from scratch and try again.
This time, when I got to the final update process, I fixed the source.list with:
sudo sed -i – ‘s/debian-mirror.sakura.ne.jp/ftp.[us].debian.org/’ /etc/apt/sources.list
And then I used aptitude to successfully update:
sudo aptitude update
sudo aptitude full-upgrade