Rooted galaxy n7000

Hi guys please help. My n7000 is rooted and the ics 4.0.4 version is a rooted rom one. My software update button is missing. Have downloaded kies but its showing no updates. My question is that can i access kies and official samsung updates through this even though im rooted. Dont really want unroot for fear of bricking my device. Bit of a novice in this area. Any help will be appreciated.

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