Sm1の更新後、2005年にSm2の更新が始まりました。座席が改良され、一部のデッキが撤去され、配色も大きく変わりました。Sm1とは異なり、Sm2は曲面の前面窓を残しました。アルミ車体の老朽化がそれほど進んでいなかったためかもしれません。
After the refurbishment of Sm1, refurbishment of Sm2 began in 2005. The seats were improved, some vestibules were removed, and the color scheme was changed significantly. Unlike Sm1, Sm2 retained its curved windshield, possibly because its aluminum body had not aged as much.