Translation of "Upgraded" in Japanese

Eventually, I upgraded from Dr. Google.

最終的に私はグーグル先生を卒業し

Why was the Japan Defense Agency upgraded to the Japanese Ministry of Defense?

防衛庁が防衛省に格上げされたのはなぜですか？

Although it's "Mac OS X", that doesn't mean that the Mac OS code itself has been upgraded to a new version.

Ｍａｃ ＯＳ Ｘといっても、Ｍａｃ ＯＳのコードをバージョンアップした訳ではない。