@james said:
Upgrade Ubuntu 20 to 22
Follow the guide https://docs.cloudron.io/guides/upgrade-ubuntu-22
If everything worked out upgrade to 24
Upgrade Ubuntu 22 to 24
Follow the guide https://docs.cloudron.io/guides/upgrade-ubuntu-24
If everything worked out, perfect.
Just to say, personally rather than doing this, I tend to just spin up a new server with the new version on and then restore the back-up to the new server. Quicker and less prone to issues imho but also not always an option.
Also the standard "hack" to skip versions (you can't) is to set auto-updates to happen ever hour until it's caught up.