When I try to upgrade my Ubuntu appears an error. It says check your INTERNET connection. But there is definitely no network problem as I'm posting this. Help me with screen shots for every step.
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There are two ways you can upgrade your Ubuntu:
- From the Software Updater (from inside the current installation)
- From a DVD or bootable USB stick with the Ubuntu version you want to go.
Don't forget to backup your data first!
Looks like you could not upgrade with the first option if understood your question correctly. So basically you could try the second option.
To perform the second option you only need a DVD/USB stick and a ISO image with the Ubuntu version you want to go (the ISO is that file you get when you download Ubuntu from the official website). Then you create burn the ISO into a DVD with Brasero or create a bootable USB stick with the Startup Disk Creator. Now you boot the computer with the DVD/USB stick on it.
