So I've been trying to update the computer for some time, and I can't didn't the answer of how to do it. I've got a Dell Inspiron 3558 and it's running Ubuntu 14.04. I want to update it to the 20.04 ver.
It's my completely first time using any kind of Linux software so I don't really have much idea of what I'm doing. I've tried the Software updater, but it prompts me to a window something like:
„Failed to download repository information Check your Internet connection.“
I've tried to update it via the Terminal, haven't got much luck with it aswell.
