Problem Upgrading Linux Lite 3.4

[mezzmer]

REPOSITORY MIRRORS
What is a repository mirror, and why should I use one?
A repository mirror is an online location that stores software packages. In order for software packages to download to you at the best possible speed, it makes sense to choose a location that is closer to you.
How do I change the repository mirror on my computer? Click here.

Replace repo main below from your selected Country repository, with the corresponding name of the release series.
[glow=red,2,300]
eg. deb http://sft.if.usp.br/linuxlite/ repo main
becomes
deb http://sft.if.usp.br/linuxlite/ citrine main[/glow]
Releases:
Citrine Repositories (citrine main): Linux Lite 3.0 - 3.8
Beryl Repositories (beryl main): Linux Lite 2.0 - 2.8

COUNTRY: USA (West Coast)
FLAG: [img alt=usa width=24 height=24]https://www.linuxliteos.com/flags/usa.png[/img]
REPO: [glow=red,2,300]deb http://mirror.unlockforus.com/linuxlite/ repo main[/glow]
[size=1em]STATUS:[/size] [size=1em]ONLINE

[/size]

Thanks, I get that part about mirrors... I swiched to the main REPO because at the time I tried to update I was getting errors, and when I switched to the main repo, the errors went away.

Any insight on any of the questions that I asked?