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You may be able to get "free" map updates from (illegal) underground sources. But that's not recommended. Yes, you're right, you can simply get a new TomTom GPS and get the latest map(s) for it. Consider getting a TomTom with lifetime maps ....and you won't have to pay for any map updates.
Have you installed an expansion memory card in the 720? Sometimes it wont let you download music because you have filled up the internal memory. You need to put music on to the separate expansion card. BUT... when connecting to the computer to update map corrections and software, if you have not selected INTERNAL MEMORY when it connects, it won't be able to find the tom tom software, so it will just think you have another external USB hardrive attached. SO... take the expansion card out of the tom tom, then connect the tom tom to the computer in the normal way - Voila, suddenly it now sees the tom tom and you can update software. But do not download any more music to the internal memory. Ultimately you will have to format the EXTERNAL expansion card to clear it of any tom tom software updates, then download ONLY MUSIC to the external card. Do not hit Update My Tom Tom while connected to the external card - only do this when connected to the internal memory.
the "no SD required" is just letting you know that all of the important stuff to make the unit run is all on the hard drive of the unit itself. Yes you can use a SD card to hold maps, photos, or music. For instance if you were going to Europe, you will be able to get a European Map and download it onto the SD card. Another instance would be if you wanted to download some mp3 files.
i have had similar problems with and sometimes it had to do with overcast not being able to signals from receivers, and the roff in my truck blocking initial signal- had to hold it out of the window until getting a signal. this is only an occasional problem. good luck i hope this might be helpful to you a k van meter
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.