We have a couple of TomTom SatNavs for the our cars/motorhome. Both have 'lifetime' free map updates- one for UK/Western Europe, the other 'Whole World', although we tend to just update UK/West Europe unless we are visiting the USA.
All in all, the update process is 'less than impressive'. It is slow, the software is unreliable when it comes to 'finding' the unit is connected (I use a Mac). Previously, I needed two IDs as you couldn't have two units on one ID, although that has changed. The process seems very 'picky' re the cable- I've tried several which show continuity but just don't work with the software. They are fine for other- none TomTom- applications.
I have a fast internet connection (40MHz, checked and reliable) but it takes 'ages' to even download the files from TomTom, before it starts trying to transfer them to the device. By ages I mean an hour or more, sometimes two. Other, large files from elsewhere are much, much, quicker.
The transfer to the device is, likewise, slow in my view.
I've tried another machine (dreaded Windows), the speed is no better, nor is another Mac. The Macs are modern, decent spec MacBook Pros etc.
I've ensured there is nothing else active on my network and used a wired (rather that Wifi) connection for the computers.
Admittedly, I don't update the units that often, maybe twice per year, usually around now and January. The exception would be if, for example, we were planning a trip to the US and didn't have the map in the unit- we had an extra card for that.
Is this typical of what others find, please?