Cannot download maps I purchased

When the navigation software was replaced, you need to validate / activate the map (previously on your device) again.
If your map subscription is (still) valid, you can download a new version of the map and activate it. Otherwise, you'll have to purchase a map (or yearly) subscription, to get the map to use.

It may be likely that the "registration" matter is related to the map ... and not the GPS device ... that one can register (as the owner) when the device is purchased new ... to get and load the latest map.
If this assumption is correct, your device would start up but not even get to the "driving screen" ... because there's no (valid) map.
You can first try to register the GPS device (on tomtom.com) against your name, etc., and opt to purchase a map (of your choice). With this purchase, you will download the map (software and data), and an activation code to validate the map. After that you should be able to use the GPS device (for that purchased map).
If you'd like additional instructions/options, let me know how I can reach you by email.

No Maps Found usually means the Application on your internal memory is not the latest one, or the map did not download correctly.
Make sure when you select internal memory when updating your device on home, that you update the application as well.
V8351 should be the latest application for your device.

The TomTom 520 and 720 are the same unit. the differance is the maps. The 520 has maps of the US and the 720 has maps of Europe. Download the free clearflash utility from TomTom and run it a couple of times. This should clear up your problem. Sometimes the mapset config in the map gets full and it has to be cleared.

Dload TomTom Home here:

For WIN:
http://download.tomtom.com/sweet/application/home2latest/TomTomHOME2winlatest.exe

For MAC:
http://download.tomtom.com/sweet/application/home2latest/TomTomHOME2maclatest.dmg

it cant be more simple lool.
Just go to change language, and all so to manage maps,switch map, hope this works.

You have to make a manual back up of the device. Make a new folder on your desk top. Connect your device to your PC and turn it on. Go to my computer and look for tom tom storage device and open it. You will see all the folders that is in your tom tom. Copy and paste just the yellow ones into the new folder. When you have done this you can know reformat your device. Do this by right clicking on the tom tom logo (in my computer). Click fat 32 (full format). This will wipe everything off. Disconnect your device, you will see a red cross on the screen. reset the device with a paper clip (hold in for 30 sec) You will still see the red cross. connect back up to PC and install the latest application of to tom home on to the device. From here you can go to add maps ect, and put your maps back on the device. Tom tom home will give you all the updates your device will be missing. You will only need the maps so don't worry if you can not copy all folders (for whatever reason) you can get everything you need as well as free updates for free via tom tom home. Its only the maps you have to pay for.

These error's occur when units have cracked maps put on them.
When you update your tomtom device it will replace the cracked file with the original tomtom file.

these units on ebay are mainly refurbished units even tho they are in 'sealed' packaging, they opened your box, put cracked maps and sell the device for more then what they have paid for it.

Best to take it back to person you purchased it from.

avoid tomtom products from ebay, most of them have cracked maps.

Thanks,
Pabs

Hi, I am back, just got the problem solved, I called their tech support at no charge (866-486-6866, Glen) , really good service.
First turn your firewall off (if you have one). You need to go into your 720 with the TomTom Home software and erase the downloaded software (with the remove items from my device) and reset the device (little reset button under the unit keep it pressed for 5 seconds), place it back in the cradle and restart your computer and than restart the 720 , bring the TomTom Home program up, and when the TomTom Home software in your computer restarts and detects the 720 it will tell you that you need to update the application, if it doesn't than you force the update by going to the add maps option, select items on my computer, select applications and press the add button, when done, go back and to device (option in top of your screen) and select disconnect device, restart your 720 and it should be back to life with the upgraded software.
Hope this helps
Aldo

Any bluechart that has been preloaded on an SD card should work.  Did you purchase your chip with the data preloaded or did you download it yourself?  If you downloaded it yourself, try erasing the sd card, format it, then insert the blank card in the 420 and power it up. This somehow preps the chip for the data download.  Then download the bluechart onto the chip and try again.  There is some ambiguous wording in the download screen that makes it look like some kind of error, try the download anyway and most of the time it will work. After the download is complete it should list the bluechart software version on the screen along with some other software info.  If the operating system software is not v2.5 or higher, you may need to download a software update first.