Failed to update

[stevef]

It looks like that log message is truncated and doesn't show what the problem is.
You can manually run the update process and log the results to text files which may show more.

Open a terminal by pressing 'Ctrl' 'Alt' and 'T' keys together.

In the terminal window, type or paste in

Code:

sudo apt-get update > apt-get-update.txt

followed by return/enter.
Enter your password if asked.
Then

Code:

sudo apt-get upgrade -y > apt-get-upgrade.txt

followed by return/enter.

This will create two files called apt-get-update.txt and apt-get-upgrade.txt in your home directory.
You can open them to check what they contain.
Check the file size is below the attachment limit and post back attaching the two files.