Maps do work here..

I used the files from a dev phone dump I found at
http://forum.xda-developers.com/show...=431115&page=7
(rapidshare link)

.. reflash the n810 with diablo...
copy the maps.apk from system/app to system/app
copy the com.google.android.maps.jar from system/framework to system/framework
.. reflash with nitdroid.. voila