Hi - definitely not an expert on tomtom or models - so don't have a huge amount...
Will they add emulator support: Depends. XXL540 is an older model. They might. And might not. You can't believe what all the various TomTom techs state - since some of them say WHATEVER to just get you off the line...
Some newer models are coming out... see here:
https://www.tomtomforums.com/tomtom...ia/24959-five-new-via-models-soon-arrive.html
For a review of features of various models see here:
https://www.tomtomforums.com/general-tomtom-discussion/21826-tomtom-model-feature-reference.html
As far as your particular model... I hope you know that does not have lifetime Traffic on it? You purchased the XXL540M; with lifetime maps - but not the TM with traffic and maps...
The XXL550TM (Costco has with case at excellent price ($149US)) has the 'easy menu' - which from various threads on this site - is apparently fairly easy to 'hack'; and to get back a lot of functionality. (Tom Tom removed a lot of good functions which the 540 supports.) And a switch exists to just make it so that you can switch back and forth between the two menu's... But (even with hacks) the 550 does not support 'compass' (it gives direction in degrees only); has no ability to set destination by Latitude/Longitude (people like for various reasons (like GeoCaching example); and is more difficult to use Itinerary Route planning (but it can do it.) TomTom also sometimes intentionally disables some of these hacks... in app updates.
When you get home; Turn your unit on - and just hold down the switch... For about 10-15 seconds - till a short 'drum roll' sounds. Release switch. Unit will now display its app version /serial, boot version, etc. Write it down; and see about possibilities of getting it to work correctly.
If you decide to do ANYTHING with your unit - first thing to do - plug in the cable with the usb end - and plug it into your computer. Do not let anything run. This will now be treated as a regular 'usb' device seen by your computer. Make sure your folder options are set to view ALL files and extensions; and open up the device's drive letter. Select/ and COPY all the contents of your tomtom to a folder and location of your choice. Copy that to a different portable drive also. (I've had hard drives crash on me...) You now have a backup of the XXL540M as it came from the store....
If you are into Real Estate; or do a lot of traveling with stops in between - you might find that the Itinerary feature is quite handy...
Or just return it; and buy from Brick Mortar. (They generally have an older app version which allows to be fixed.) Hope some of this helps; the two links might also help you out...
D.