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I believe that is a jtag port. I have all the tools/mdi, tis, and about 100 extra modules if you need any help.

 

Is it possible to download an update from TIS and share for us to look at?

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HMI Software GMG2_12.6N146.4 and GMG2_12.N185 for the MY14 and also GMG2_14.1F105 for the MY15 if possible! Thank you!!

Edited by TR84

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its not that simple. the software (allegedly open source) can be downloaded to a usb for updating a module, but I can't specially select those exact versions. We would need to find a vehicle and module combo that currently calls for those files. each group of files would be 1-3 gig approx so would need drop box or ftp

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Can you get us any update doesn't matter what version? I will set up a drop box for you if it makes it easier. And if you need I can give you my vin number which has MY14 and navigation

Can you get us any update doesn't matter what version? I will set up a drop box for you if it makes it easier. And if you need I can give you my vin number which has MY14 and navigation

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And from what I understand is that the software in the hmi is updated through the use of an MDI and GDS2 through service programming software?

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the calibration is updated through the mdi. software update initiated through mdi, but applied with usb. gds2 does nothing but report current conditions/software levels

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I have a 2014 lt2 with Nav, do you need a vin? I can setup a file share as well.

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I have lots of vins, but the files produced will be only the latest versions for those vehicles and I believe they are heavily encrypted. I was looking into the possibility of producing a file using a vin and then modifying the file to switch the vin to a different one as desired

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I think we are on the right track.. we just need the file that is on the USB drive for the update. Then we can try and decipher it and then change the parameters, modify whatever we want, etc. Then we will have to figure out how to get it back onto a HMI module. Also is there any information or schematics available on your end for the HMI module?

Edited by TR84

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I have all the external schematics of course, but nothing on interior. if you do a google search, you will find a teardown of the hmi and chipset details from bosch I believe

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I have a 2015 Silverado. Is there an app available so that I can get the maps from my cell phone to display on my 8" screen? I don't like Onstar and i don't want to buy and install the factory navigation.

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