Update problem on RPi 3+

[Sailbus]

I am having a similar problem.  I started with a fresh image install on 1.0.0 and have been unable to successfully update.  I tried doing the GParted partition expansion and the update still fails.  I get an error I will post up at the end of the update related to Python updates, but not sure why that is a problem.  

I am doing this headless so when I reboot the Pi the internet doesn't come back so I can no longer connect, and need to start from a clean install.  I've tried this about 6 times already and always get the same issue.

If you haven't given up upgrading yet, you could try this , before running the upgrade open a terminal and paste this in then hit return >

sudo apt-mark hold hostapd

There have been problems with hostapd, might work  

sudo apt-mark hold hostapd  worked for me. Upgrade went fine.