If you get the message about the missing Traffic Provider database you need to do this:

Copy and paste the GarminDevice.xml file from your nuvi backup into a folder named Garmin on a usb flash drive or sd card. Open the xml file with Wordpad or Notepad. Look for this entry near the start:

<SoftwareVersion>xxx</SoftwareVersion>

Where xxx is the version of firmware that will be read by WebUpdater. It needs to be shown as the latest version of 5xx fw. i.e. the 3 numbers 'xxx' should be '430' at present. That way the program will not try to dl the nuvi 5xx v4.30 fw as it will think the device is up to date. Start WU and check the traffic provider database to download. After it's finished, copy and paste the file to your zumo's .System folder.

The reason you have to move those other files is that the nuvi 5xx and zumo 220 have different folder structure. As said, put the maps in .System and everything else including Voice from the Garmin folder in the root, leave only the GarminDevice.xml in the Garmin folder.