1 vote

The value 'jammy' is invalid for APT::Default-Release

although the original question was written as a trial to downgrade the version, I received the same output when I tried to upgrade also I've succeeded in solving this problem with the assistance of ai ...
ahm22004's user avatar
1 vote

The value 'jammy' is invalid for APT::Default-Release

You can only upgrade to Ubuntu 23.04 from Ubuntu 22.10. Going backwards from Ubuntu 22.10 to Ubuntu 22.04 (jammy) is not upgrading, it's downgrading. That's why you got this error message: The value '...
karel's user avatar
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