How to update or upgrade mysql 5.1.30 to version 5.1.31

Philippines
February 23, 2009 9:10am CST
anybody here knows how can i update my sql server without loosing my old data that was stored in my server? i'm thinkin if i can only overwrite the old version with the new one. is this possible? does anyone of you here already did that? or do i really need to uninstall the old version and then install the new one and update all the tables. thanks in adavance.
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