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---> Re: TomTom 720t Maurice Batey11-05-2009
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Posted by Keith on November 6, 2009, 2:49 pm



>> On Fri, 06 Nov 2009 20:51:43 +1000, Jack Simmons wrote:
>>> As far as I know you cannot download map files direct to pc. You
>>> download
>>> and install the map file direct to your tomtom using home, then backup
>>> the
>>> map file to your pc
>> Yes - same with TomTomXL.
> And, as I understand it, the map is encrypted with a single use key. You
> get one chance to install it. The idea is that they don't want one person
> to get a map and then share it with their buddies.
> Hmmm on the dark side, there's got to be a hack for this. Most likely one
> of the registry keys on the computer that installs the map. Other
> possibility is that the program goes out on the internet to validate the
> key and then give it an OK to proceed. Could confirm this by trying to
> install a map without internet access.
It is a one-time download so do it whilst the TT is fully charged and on the
cradle (my case) or connected to a charger and don't touch anything (unless
the install process asks) until the install is complete. Then back up
entire TTto PC using Windows Explorer.



Posted by Sheila56 on November 6, 2009, 6:30 pm


First thank you to all who have helped me with this.

Maurice

Yes That is why I wanted a download of the map and not have to get it
downloaded to my unit.

I think it is a bit mean of TomTom not to let you have it again if you
lose it. After all you have paid for it.

Arrrrr well will have to make certain I get it all backed up this
time and to a dvd.

Sheila56





wrote:

>> On Fri, 06 Nov 2009 20:51:43 +1000, Jack Simmons wrote:
>>> As far as I know you cannot download map files direct to pc. You download
>>> and install the map file direct to your tomtom using home, then backup
>>> the
>>> map file to your pc
>> Yes - same with TomTomXL.
>And, as I understand it, the map is encrypted with a single use key. You get
>one chance to install it. The idea is that they don't want one person to get
>a map and then share it with their buddies.
>Hmmm on the dark side, there's got to be a hack for this. Most likely one of
>the registry keys on the computer that installs the map. Other possibility
>is that the program goes out on the internet to validate the key and then
>give it an OK to proceed. Could confirm this by trying to install a map
>without internet access.

Posted by Jack Simmons on November 9, 2009, 7:26 am


wrote:

>> On Fri, 06 Nov 2009 20:51:43 +1000, Jack Simmons wrote:
>>> As far as I know you cannot download map files direct to pc. You download
>>> and install the map file direct to your tomtom using home, then backup
>>> the
>>> map file to your pc
>> Yes - same with TomTomXL.
>And, as I understand it, the map is encrypted with a single use key. You get
>one chance to install it. The idea is that they don't want one person to get
>a map and then share it with their buddies.
>Hmmm on the dark side, there's got to be a hack for this. Most likely one of
>the registry keys on the computer that installs the map. Other possibility
>is that the program goes out on the internet to validate the key and then
>give it an OK to proceed. Could confirm this by trying to install a map
>without internet access.

Well, once installed to the unit then backed up to pc, I can then
reload the maps from pc to the tomtom
Thats how I swapped the maps on my 930 from internal memory to SD card
& they now run fine from card

Posted by Oppie on November 9, 2009, 11:12 am


>>And, as I understand it, the map is encrypted with a single use key. You
>>get
>>one chance to install it. The idea is that they don't want one person to
>>get
>>a map and then share it with their buddies.
> Well, once installed to the unit then backed up to pc, I can then
> reload the maps from pc to the tomtom
> Thats how I swapped the maps on my 930 from internal memory to SD card
> & they now run fine from card

Ah, yes. But can you share a backup with a buddy that has a similar tomtom?
I suspect not. And even if you were able to, I believe that there is
something in it that contains serial number and gives traceability (read
'liability') back to you.

Hey, I'm an engineer and we always try to exploit weakness in any system -
if only to patch security holes ;) I just haven't had any time to futz with
the gps. Day job is way too demanding.

Oppie
41.01,-73.76 (precision truncated for privacy)



Posted by Jack Simmons on November 10, 2009, 9:22 am


wrote:

>>>And, as I understand it, the map is encrypted with a single use key. You
>>>get
>>>one chance to install it. The idea is that they don't want one person to
>>>get
>>>a map and then share it with their buddies.
>> Well, once installed to the unit then backed up to pc, I can then
>> reload the maps from pc to the tomtom
>> Thats how I swapped the maps on my 930 from internal memory to SD card
>> & they now run fine from card
>Ah, yes. But can you share a backup with a buddy that has a similar tomtom?
>I suspect not. And even if you were able to, I believe that there is
>something in it that contains serial number and gives traceability (read
>'liability') back to you.
>Hey, I'm an engineer and we always try to exploit weakness in any system -
>if only to patch security holes ;) I just haven't had any time to futz with
>the gps. Day job is way too demanding.
>Oppie
>41.01,-73.76 (precision truncated for privacy)
>

very much doubt it, the original download & install to the tomtom
locks the map to that unit :)

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