How to Update Zorin 15.3 to Ubuntu 20.04

A few Months ago i always got the Update Message that i can upgrade to Ubuntu 20.04. But i didnt want to "change a running system" So i clicked it away. But now i have some Problems with streamlink and want to try Ubuntu 20.04. But i cant find the Update Function.
This happens when i type sudo do-release-upgrade -c

~$ sudo do-release-upgrade -V
do-release-upgrade: version 18.04.40
~$ sudo do-release-upgrade -c
Checking for a new Ubuntu release
In /etc/update-manager/release-upgrades Prompt 
is set to never so upgrading is not possible.

Thanks for Help.

Those prompts would have broken your Zorin OS.
You were wise to click them away.

It may have worked (Painfully) but in the end, the result would have been a sort of Ubuntu Dstro, replacing (and removing) Zorin OS.

However, Zorin OS 16 is now released.

Based on Ubuntu 20.04, you may test it out as a LiveUSB to see if it suits your needs.

I agree with Aaravisian. While Ubuntu themselve's may have a functioning direct upgrade option, Zorin does not. And if you had initiated it, like Aaravisian said, it would have most certainly broke your system.

The direct upgrade function, has been a feature that many Zorin users have been requesting for a very long time. The reasons as to why this feature was left out of OS 16 escapes me. But the developers assured us, that they are working on the feature.

With many on Ubuntu 20.04 that have the feature, as well as POP OS users that have it, it really makes me wonder what the issue is. Maybe there is some incompatibility somewhere that I don't know about, its entirely possible, I am not a developer, so how would I know?

There is no direct way to update from Zorin to Ubuntu. You'll need to do a fresh Ubuntu install if that is what you want to do.

I agree with @Aravisian that you might want to try either/both Zorin 16 (if you are not already using it) and Ubuntu 20.04 in a Live session before you make the jump, comparing the two. If you want a more comprehensive way to test, you can install in a Gnome Box (that's how I look at other distros), which is very easy to do and will give you more ability to test because you will be running an actual instance with the ability to modify, install apps and so on.

If you are talking about updating Zorin 15 (based on Ubuntu 18.04) to Zorin 16 (based on Ubuntu 20.04) there is no direct update path at this time. Zorin is working on providing one, but there is no announced ETA. At this time, you have two options: (a) do a fresh install of Zorin 16, or (b) wait a while until the update tool is made available.

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