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Hi,
can smb share adaptashions of 5F UMTS parameter on EU spec Audi A4 B9?
Just for trying to modify NAR spec A4, because in Europe with my US car I have only 2G (no 3G and LTE) or maybe smb know method to make NAR Audi to work on EU LTE freguencies, it would great.
Seems that NAR and EU parameters are the same:
IDE03238-ENG117830-Parameter for connection transfer (UMTS)-1E_EcLo,0
IDE03238-ENG117831-Parameter for connection transfer (UMTS)-1E_RSCP,15
IDE03238-ENG117832-Parameter for connection transfer (UMTS)-1F_EcLo,0
IDE03238-ENG117833-Parameter for connection transfer (UMTS)-1F_RSCP,15
IDE03238-ENG122277-Parameter for connection transfer (UMTS)-2D_EcLo,0
IDE03238-ENG122278-Parameter for connection transfer (UMTS)-2D_RSCP,11
IDE03238-ENG122275-Parameter for connection transfer (UMTS)-3A_EcLo,0
IDE03238-ENG122276-Parameter for connection transfer (UMTS)-3A_RSCP,8
In all likelihood, the chipsets of the modules only support the bands that are in use in the respective countries, so the NAR module only supports North American bands and the EU module only supports the European bands. Each country and carrier uses a different part of the frequency spectrum for their networks. Smartphones are typically world phones nowadays, so they support all the bands in use for travel, but that requires that the phone gets certified and tested in each country. A NAR spec car normally doesn't find itself on the European continent except for a few mostly temporary exceptions such as European Delivery and US military personnel and a few who relocate, so it doesn't make much sense to use a telephone module that supports all the world bands and requiring to be certified in all the countries. That's not worth from a cost perspective. By making country/continent specific modules, they only have to be tested and certified in part of the world, so it's cheaper. As far as NAR is concerned, they also pretty much only work with AT&T due to the exclusive arrangements the carriers are allowed to pursue here. EU is different, the modules need to be open and usable with any carrier. I did read a while back that the embedded SIM technically can be programmed for any country. That's supposed to be the benefit, so maybe the modules do support all bands, but the eSIM has to be provisioned accordingly.
Last edited by superswiss; 10-09-2018 at 07:32 AM.
Difference between US and EU LTE Modules is that for NAR it is ALS6A-US and for the EU it's ALS6A-E (you can find attached manual for each of it).
Teoreticaly they could be replaced.
I managed to get a Europe version for the LTE module, I just replaced, but now when I insert the SIM, nothing happens... It is like the module is not present, any idea why?
With the only module the SIM card was working, but only 2G.
The first replace was a fail because the LTE module was with the wrong chip inside, was a Huawei chip, right now i just replaced with the correct model. I have also created a video to show how you can replace this module, step by step (for those who are interested in this)
10-09-2018, 03:24 AM
UA: Audi A4 B9 LTE (UMTS) module from NAR to EU
