Mapupdater downloads files needed for 34xx you dont have to change anything, you can check downloaded files in Mapupdater setuplog on your pc . In 7 is in C:\Users\yourname\AppData\Roaming\Garmin\Map Update\setuplog.txt

Read this post n13 linked below: be sure to have all the files needed and space enough for webupdater to install all the needed files in nuvi, sometimes some are not installed for lack of space. Check the files in your nuvi.
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