나는 인터넷에 접속할 수 있고 현재 IP(영국)는 있지만 82.47.29.14내 노트북은 여전히 독일 서버에 연결되어 있습니다 91.189.91.24 80.
하지만 지금은 다음을 수행할 수 없습니다 do-release-upgrade.
alvas@ubi:~$ sudo do-release-upgrade -d
Checking for a new Ubuntu release
Err Upgrade tool signature
404 Not Found [IP: 91.189.91.24 80]
Err Upgrade tool
404 Not Found [IP: 91.189.91.24 80]
Fetched 0 B in 0s (0 B/s)
WARNING:root:file 'utopic.tar.gz.gpg' missing
Failed to fetch
Fetching the upgrade failed. There may be a network problem.
alvas@ubi:~$ sudo do-release-upgrade -d
Checking for a new Ubuntu release
Err Upgrade tool signature
404 Not Found [IP: 91.189.91.23 80]
Err Upgrade tool
404 Not Found [IP: 91.189.91.23 80]
Fetched 0 B in 0s (0 B/s)
WARNING:root:file 'utopic.tar.gz.gpg' missing
Failed to fetch
Fetching the upgrade failed. There may be a network problem.
이 문제를 해결하려면 어떻게 해야 합니까 do-release-upgrade?