Yup, I select the nokia E66 model in the maps.nokia.com page, and i successfully installed it in my e63.

And Ovi suites allows me to download the maps 
and now, i often use the ovi map with my trusty gps 

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Added on August 25, 2010, 5:23 pmOops! Sorry, I downloaded the ovi maps version 3.01 from somewhere else.

If you choose the Nokia E66 from the maps.nokia.com, it is verson 3.03 which cannot work in nokia e63.

BTW, i found the version 3.01 link > Nokia Ovi Maps version 3.01

apply a cert and sign it, then should be no cert error
actually, i oso wondering OVI map 3.01 can free navigation and update latest map... but since the forumer said can, then..