Thread: Using TMC in Garmin nuvi for free

Originally Posted by rtsouza

Dears,

I have a nuvi 3750 a nuvi 255W and a GMT-25 cable.
Was able to get the unlock codes and insert BR Navteq subscriptions.
Worked fine in Sao Paulo area on 3750 , but as already known from this forum didn't worked on 255W, as it doesn't uses TrafficProvider.xml
My question is : Is it due to device software or the GMT-25 is not compatible with nuvi 255W at all ? If it's only software , maybe there is a mod firmware around that can fix it. or not?

Thanks

As said Loly, the GTM25 with 255W works well in other countries, but none cable TMC receiver of Garmin enables Traffic in Brazil with gps models xxx (3 digits) and jetmouse signature. To work there has to be compatibility between the firmware gps, cable / TMC receiver and codes transmitted by the local radio operator. Your case is limitation in firmware of gps, certainly a very complicated problem, so that nobody was interested in it solves.

@angelozip

Can you try with this for Brazil:

2823 14 15 1
or
2823 0 14 1
or
31495, 14, 15, 1
or
31495, 0, 14, 1

Create code with JM and let me know if work some of this for TMC in Brazil.

Loly, my GTM25 crashed shortly after update with the last firmware 3.10 and installation of new signature, but I can not say whether it was coincidence or consequence. After this, the option no longer appears on the GPS to install or delete subscriptions. I'm trying unsuccessfully to reinstall the previous firmware (2.90). If you have any idea about it, is welcome.

Today I have only a GTM26 on hand. The combinations that you suggest I've done for a long time, but always in Nuvis 4 digit (13xx and higher). With FID 2823 enables Traffic but erratically, tunes flow of traffic from distant cities, something strange, that is, useless! The other codes I've tried it and also various other combinations of FID, PID and RGN. Work, but with more satisfactory results seems even 31495, 14,14,1 and 15,15,1. The tunning always occurs with PID 14. There are two official signatures: one with pid 14 and other with 15.

The GTM 25 and 35 accept the signature Jetmouse perfectly, but the firmware of 255 (and all xxx) not configure the receiver to tune and show some abnormality in the presentation of the signature. From what I remember these models do not have trafficprovider.xml in memory disk of gps, so the tuning parameters should be embedded in the firmware. Knowing how to enter the correct parameters of the country, perhaps the tuning will be possible. Who has one 255 and GTM25 is Acleite. He and numerous users have tried and no one has succeeded to enable traffic in these models. If you want to search about, surely many people will be grateful ..

Can you upload some picture from xxx model that we can see what abnormality is in developer menu in fm table?

Can you also try with 31495, 13, 13, 1

p.s.
I think something is in this GTM type3 FW 3.10, becouse also 1 user with GTM35 have problem after update, and antenne stop working.
Do you know some user who buy tmc subscription for Brazil over my garmin and can share unlock code?

Originally Posted by lolypop000

Search FW of nuvi 255W and found only this providers:..
Nowhere can't found Brazil (BR), maybe this is reason why TMC won't work in Brazil.
Maybe if you write to Garmin and ask why is not Brazil traffic in nuvi 255W FW and if they can add it.

It may be that now, and only now, is it possible to claim for Garmin. That's because she only recently began selling a cable receiver separately of gps, the GTM35 already with signature installed (before Traffic original was available only to those who buy certain models of GPS). However, if the job is much more complex than the mere insertion of Navteq Br in the firmware, it is quite likely that Garmin responds that are not compatible, since xxx are out of line production at long time. Everything indicates that many parameters have to be entered, such as those contained in trafficprovider. The worst thing is that it would have to be done for the entire line of models 3 digits (xxx). In short, it seems very unlikely that Garmin meets to this request. Anyway, who bought a GTM 35 with official signature can try to claim with the Garmin, hope is the last that dies, and you are one of them .. lol. How about trying to enter the provider NAVTEQ Traffic (BR) in the firmware?

Can you also try with 31495, 13, 13,1

Despite of ok in infouc, has no parameter ltn Navteq Br and thus the parameters of signature, 11/a2/7/13 (11/00/7/13 in gtm26) not equal to the signal of RDS transmission (11/a2/7/14), so not tunes Traffic signal. The identification of the provider (Navteq Br) appear as Not Named, by the way, exactly the same thing that happens in Nuvis XXX, due to lack of the name in the firmware, as you pointed out earlier. In my case due to the loss of the relation with the parameters of trafficproviders.

Can you upload some picture from xxx model that we can see what abnormality is in developer menu in fm table?

I do not have any nuvi xxx available. I believe the rtsouza user or one that has a nuvi xxx can collaborate. Far as I remember, after installed signature in this nuvis, the provider appears as Not Named.

I think something is in this GTM type3 FW 3.10, becouse also 1 user with GTM35 have problem after update, and antenne stop working.

I'm putting this question in the appropriate topic [Only registered and activated users can see links. ]

Originally Posted by lolypop000

Search FW of nuvi 255W and found only this providers:..
Nowhere can't found Brazil (BR), maybe this is reason why TMC won't work in Brazil.
Maybe if you write to Garmin and ask why is not Brazil traffic in nuvi 255W FW and if they can add it.

It may be that now, and only now, is it possible to claim for Garmin. That's because she only recently began selling a cable receiver separately of gps, the GTM35 already with signature installed (before Traffic original was available only to those who buy certain models of GPS). However, if the job is much more complex than the mere insertion of Navteq Br in the firmware, it is quite likely that Garmin responds that are not compatible, since xxx are out of line production at long time. Everything indicates that many parameters have to be entered, such as those contained in trafficprovider. The worst thing is that it would have to be done for the entire line of models 3 digits (xxx). In short, it seems very unlikely that Garmin meets to this request. Anyway, who bought a GTM 35 with official signature can try to claim with the Garmin, hope is the last that dies, and you are one of them .. lol. How about trying to enter the provider NAVTEQ Traffic (BR) in the firmware?

Can you also try with 31495, 13, 13,1

Despite of ok in infouc, has no parameter ltn Navteq Br and thus the parameters of signature, 11/a2/7/13 (11/00/7/13 in gtm26) not equal to the signal of RDS transmission (11/a2/7/14), so not tunes Traffic signal. The identification of the provider (Navteq Br) appear as Not Named, by the way, exactly the same thing that happens in Nuvis XXX, due to lack of the name in the firmware, as you pointed out earlier. In my case due to the loss of the relation with the parameters of trafficproviders.

Can you upload some picture from xxx model that we can see what abnormality is in developer menu in fm table?

I do not have any nuvi xxx available. I believe the rtsouza user or one that has a nuvi xxx can collaborate. Far as I remember, after installed signature in this nuvis, the provider appears as Not Named.

I think something is in this GTM type3 FW 3.10, becouse also 1 user with GTM35 have problem after update, and antenne stop working.

I'm putting this question in the appropriate topic [Only registered and activated users can see links. ]