'No data available' message after map update

Has yours been updated recently? I updated mine, (about a year ago), on the website and it wiped all the map data.
I think some of the more recent software update versions have caused problems for certain sat nav models.
Try logging onto the Garmin website, connect you sat nav to you computer and check it has the current software updates. Older models sometimes need to be reset to an previous version of the software to work correctly. To do this you might have to contact Garmin directly by Email to get them to send you the correct software version.
Hope this helps.

Important note about maps: Due to our high volume of sales, every Garmin portable GPS navigator sold by Amazon.com will come with the most recent map version. The current map provides data through April 1, 2007. If you purchased a Garmin GPS before April 1, 2007, you can purchase a map update on SD card. We will notify customers who purchase from Amazon.com via e-mail whenever new map updates become available.

update failed or was corrupt or memory failed or wiped just reconnect to pc an let it update again

It should be available if you downloaded their update software to your computer. I go into it every so often by connecting the gps to the computer thru their software and check for map updates. If the update is large then you will need a larger memory card to handle the updated maps.

Garmin periodically releases updated maps for its GPSdevices. The my Garmin website offers convenient access for managing yourGarmin devices and finding the map updates you need. Garmin offers threeoptions for map updates: free download, single-purchase download or lifetimesubscription. Regardless of which option you choose, the process to downloadmap updates to your Garmin is the same.TOOLSAND INTRUCTION NEEDED TO SOLVE THE PROBLEM1 Connect your Garmin GPS to your computer. Locate theUSB ports on your computer and on your GPS. The GPS ports are typically on theback of the device and may be hidden by a protective cover or rubber cap. Plugone end of the USB cable into your computer and plug the other end of the USBcable into your GPS. Power on the GPS.2 Sign in to my Garmin(see Resources) with your username and password. If you do not have an account,click the Create New Account link to register your Garmin devices.3 Click the my Maps tab to display a list of yourregistered devices and their associated maps. Click the Map Downloads link todisplay a list of available map updates for your devices. Select PC Download orMac Download link.4 If you are alerted to run the Garmin CommunicatorPlug in, click Run. When the Plug in has detected your GPS and is ready todownload the map update, click the Launch Download Manager button.5 At the Save As prompt to save the map update, notethe location or select a new location to save the file. Click the Save button.6 When the Map Update file has finished downloading,click the Launch button.7 At the "Welcome to the Garmin Map Update"screen, click Next.8 After the Map Update USB Driver Check finishes, clickNext.9 Follow any instructions on the Map Update SuccessfulInstallation screen. Click Next.10 At the Software Data and License Agreement screen,select the checkbox to accept the agreement. Click Next.11 After the update installation finishes, click Finishto exit the program.12 Disconnect your GPS from your computer.Thanks.

You can update the maps using either Garmin or other third party maps. The accuracy will depend on how old the mapping data was that is used to create the map. So you want to find out if the map in that area is recently updated. You may also find that a regional map may show the details in some areas where a larger map won't.

To upgrade using Garmin you just go to garmins website

http://www8.garmin.com/updatemaps/

You may find the map update is free or you may update for a fee or get a lifetime update subscription. The gps is hooked up through the usb cable and will download and instal the updates. It's painless (sort of ;-]) and quick.

Sorry, no free maps. I know I've tried. You either live with the old map or but the latest version.
I bought the life time maps updates and I'm glad I did.
I've updated my maps at least 6 times.
New maps are about $70.
Life time maps are about $99 (when I bought mine)
BUT FIRST make SURE you have the latest software in YOUR computer and in YOUR Garmin before you load any maps.
You can get that FREE at Garmin here:
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After installing WebUpdater once from the Garmin website, perform all future software updates from your computer. Simply connect your compatible Garmin device to your computer, then run WebUpdater from your computer's "Start Menu" by selecting "Start", "Programs", "Garmin", and finally "WebUpdater"
REMEMBER: It takes hours to do a complete a map update.
Unless you bought the Lifetime maps you may have to pay for current maps.

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Does this help? Let us know. Thanks.

Garmin has released new maps. Most of their units are entitled to a free update if the unit was purchased recently Just a heads up to anyone who recently purchased a C330. According to Garmin's tech support, the map udate 2008 is not free to those of us that recently purchased a C330. Only to those who purchased a C340 and up. Their excuse is that it is a "low end" unit, and also that the memory cannot hold the full US maps on the DVD. Gee, I can purchase the update for $69.99 and load a subset of the maps if I want, according to the person in tech support, but I cannot receive it as a free update. So, apparently buyer beware if you purchase Garmin's "low end" units. You will apparently not be able to receive a free update of maps, even if the unit you buy is already out of date.

The only way to update the maps is to purchase new maps from Garmin and download them via the computer. The 2008 map updates are currently available, and Garmin has told me new maps will be out in a few months.