If you look in your TomTom\HOME\Download\complete\program folder under My Documents you will see any downloaded NavCore in a separate folder

If you look in one of those folders you will see a TOC file
Open the file and look for <url location= it will have the URL to download that NavCore.

Also TomTom will mostly stick with a naming convencion
for the NavCore cabs.
So if you know what they tend to look like and the firmware version you can guess and try at the CAB's name.

Other than that you can do a web search.We were mapping out files and folders back at GPS Review but I can't recall what if anything data_lis.chk is for.

 

Just a further update on the saga of TomTom Support in Australia:

I received another email from TomTom Support, containing a list of steps to take to correct the corrupt file. Remember, this all started because the corrupt file prevented me from doing a backup, either from within TomTom Home or manually.

The second step of TomTom Support's latest solution begins:
"IMPORTANT: Please only continue with Step 2 if you have made a complete Manual back up of your TomTom without any error messages. If you do get an error message, please contact us before continuing."

It seems to me that TomTom Support in Australia is either:
a. not reading my support requests
b. not thinking about the relevance of their response
c. not understanding the issues due to a lack of technical competence
d. all of the above.

It is also possible they are relying on an automated response system, just scanning for key words in the support request and sending back a pre-built reply. If this is the case, their system could use a little work, and a bit of intelligent human oversight wouldn't go astray either.

Either way, I can't help thinking TomTom Support in Australia is just a useless waste of time. I won't bother dealing with them again if I can avoid it. By comparison, the help I have received from people on TomTomForums.com has been wonderful. I can't thank you enough.

I'm curious, though. Is official TomTom Support on these sorts of problems as unhelpful in other parts of the world as it is in Australia?

I am about to send a final message to TomTom Support advising them that I have fixed the problem thanks to the people at TomTomForums.com. Hopefully that will be the end of this matter.

 

It's a crapshoot. My feeling is that it's better to call than email customer support. Further, just based upon the browsing I do in a UK based gps site, that NA support is somewhat sharper than UK support.

And.........having said that, some NA based residents have received some really stooooooooopid answers to questions from NA support while others have gotten lucky and been dealt with by CS agents who appear to be as sharp as tacks.

So, you never know..............

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TomTom 720--NA Map 845--WCE Map 840--NZ Map 835--App 8.351