Error upgrading zorin 16 to 17 (stable-jammy Release' does not have a Release file)

Hi, I've un-installed these (wasn't using them much anyway), and removed those entries from the sources.list.d, but still get the same "download failed" error :roll_eyes:

One other thing I see from the software updater is this:
image
..I this something else stuffing things up, and how could I correct it?

Can you please show

ls /etc/apt/sources.list.d

cat /etc/apt/sources.list

sources.list.d:
audio-recorder-ubuntu-ppa-focal.list
audio-recorder-ubuntu-ppa-focal.list.save
berglh-ubuntu-pulseaudio-a2dp-focal.list
berglh-ubuntu-pulseaudio-a2dp-focal.list.save
gencfsm-ubuntu-ppa-focal.list
gencfsm-ubuntu-ppa-focal.list.save
mozillacorp-ubuntu-mozillavpn-focal.list
mozillacorp-ubuntu-mozillavpn-focal.list.save
zorin.list
zorin.list.save
zorinos-ubuntu-apps-focal.list
zorinos-ubuntu-apps-focal.list.save
zorinos-ubuntu-drivers-focal.list
zorinos-ubuntu-drivers-focal.list.save
zorinos-ubuntu-patches-focal.list
zorinos-ubuntu-patches-focal.list.save
zorinos-ubuntu-stable-focal.list
zorinos-ubuntu-stable-focal.list.save

sources list:

..I presume there's some disparity between the two? Should the sources list file content match the software updater sources:

This repository does not have a Jammy release file:

I checked the rest and they all do.

Brave Browser has a manual method of adding the key and repository, which you may recall when you installed it. This may be an issue, and you might consider removing Brave and the Brave repo temporarily just to save yourself some headache until after performing the upgrade.

Ok folks, I removed the pulseaudio package and brave, but same error; as they say in medical dramas, "it's 09:41, and I'm calling it..." I'll just do a fresh install and hope the next time I need upgrade it'll work...

Thanks for all your help and advice.

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