My tomtom go 700 is about 5 years old and i need to update the maps how do i start?

1.First of all check that TOMTOM actually still support this product and only perform updates using a wired network connection - WIFI can drop out and corrupt the downloads
2.Then see if they actually are supplying a new map for the 700
3.Without activating TOMTOM Home, plug your GO700 into your PC and let it recognise the 'drive assignment'
4.Take a FULL backup of all files on the TOMTOM 2Gb disk on your PC NOTE: this is totally separate and additional to any backups you might make with TOMTOM Home.
5.Disconnect your TOMTOM
6.Start your TOMTOM Home software and perform an update check from the 'help' drop down menu
7.Once you have this updated connect your TOMTOM
8.Perform a full backup again with the TOMTOM Home software
9.Search using TOMTOM Home for any GO700 application software updates and install these (NOTE - ONLY INSTALL THE APPLICATION UPDATES)
10.Reboot your GO700 to make sure that it works with any application updates
11.Re-connect your TOMTOM and this time perform a search for map updates to purchase and follow the instructions.
12.It is very likely that TOMTOM Home will say that there is not enough space on the drive to install the new map, it will follow an automatic process to remove your old map and then install the new one that you have purchased on lne from TOMTOM.
13. If Home has installed your new map correctly, when you log off and disconnect your GO700 it should then initialise - the long time bar rebuidling the maps and then start up normally. It can be necessary to reset your GO700 using the rest button under the base.

GOOD LUCK, This is currently a very messy process but one which seems to work for recovering the GO700 in the event of a failure, TOMTOM have been hopeless for me in getting any maps installed on a GO700, so this is my way of getting round their lousy support service.