wmg網站所提供o2 life rom wm6.0

請問各位使用者
wmg所提供的rom
355343010194624 (ENG) This device does not require this upgrade.
355343010241383 (ARA) This device does not require this upgrade.
355343010060395 (CHT)
355343010099815 (ENG) This device does not require this upgrade.
355343010111909 (CHT)
355343010353097 (ENG) This device does not require this upgrade.
352831018050601 (CHS) This device does not require this upgrade.
有兩個請問差在哪裡呢.大小檔案都一樣
且我機器的碼都跟上面的不一樣
有相同使用者可以提供一下資訊的嗎