I have a TomTom ONE N14644. Is there any other

https://www.google.com/?gws_rd=ssl#q=TOMTOM+ONE+N14644+manual

go google and down load the operators manual for the device
go google and type in --- user manual for tomtom model n14644-- and if there is a pdf version available download it

You will know if your (specific) unit comes with a free life-time map update if it says so on the retail box that it comes in. Usually there is an "M" ... indicating free Map updates. A "T" indicates free Traffic (info) updates.
Otherwise, you can register the unit (on the TomTom website), and use the TomTom HOME software .... to find out. When you connect the unit to your computer running the TT HOME software, it will automatically tell you if/when you have updates ... including any free map updates

Page 2 of the manual, under 'Having Problems?'. You can download it from here if needed: http://download.tomtom.com/open/manuals/one30/refman/TomTom-ONEv4-en-US.pdf

There's a possibility that the navigation software is corrupted.
Have you tried to recover it from your backup (on your computer) ?
Otherwise, you'll want to use TomTom Home (or MyDrive Connect) to see if you can download and re-install the software from the tomtom webiste.
Recently, TomTom has decided to limit/stop support (including software/maps, etc.) for certain (older) models of TomTom GPS. If your model is one of those, you're out of luck. TomTom is trying to have you buy a new model.

Need to update my tom tom. I have no idea how to do it.

Go to TOM TOM´s homepage http://www.tomtom.com/services/
Connect the GPS unit to the PC using the USB2 connection.
You will be given the possibility to restore the unit´s files. This takes a while, but it solved the problem for me.

I do some work with TomTom - it's possible that if something interrupted or went wrong during the install, the map could have been deleted. TomTom is aware of the problem and is working to fix it - if you are map-less, call support (866 486 6866) and we can work on getting you a new map.

you can find tomtom manual

go to tomtom website ----> support scroll down at the right hand side click Find downloads


20/Apr/09

Hey buddy....use this link to visit the website where you can view/download the manual for the TomTom XL N14644:

http://www.scribd.com/doc/249380/TomTomONE-Manual