Change language of 19G488 or 19C112 Bluetooth-Module
Posted: 28 Dec 2020, 12:48
I know the language is specified by pre-last char of partnumber, e.g. 19C112-A* for English, 19C112-B* for German, 19C112-D for Spain, and so on.
I also know that mentioned modules can only keep one single language (first multilanguage module was 14D212) and usually it is not possible to change it.
BUT - hey, as we are here on a hacker forum, let's see if there is really no way of doing it?!
Who want's to assist?
My first interest is of the update files for the module. I attached the latest available version of it. They are for "Sound & Connect" modules only, so only applicable to 19C112. Also there where no public updates for 19G488 available (as far as i know...).
All 19C112 are equiped with an USB-Port, where a usual MINI- or MICRO-USB cable would fit, to install the update. Only place all files from the ZIP onto a FAT32 formatted stick and put it into the USB plug of the glovebox. Turn on the radio and it should show "Update in progress" or something like that.
In the ZIP you find files for various languages (look at pre-last char). The module will only fetch the "right one" for itself. So if it is an *-B* (German) it will only use the 8M5T-14D511-BV.* files. (Note that "14D511" is the partnumber of the software, not the hardware).
There are two files for each language, both about 7 MB in size:
Let's take a look at the interesting parts of the header:
Next i extracted the binary part of the VBF (did it manually as it would not load with the VBF-Tool i have). It contains the partnumber several times and compared to another language the first 0x382B00 bytes are very similar, expect of some bytes representing the language itself. From address 0x382B1C onwards the files differ totally.
As for any update we should remind that there comes a SBL first and so we read:
"SBL-MCU V 4.700 30-07-12 RX-42 HW60 (c) Nokia"
This tells us that the update would only apply on modules of type "RX-42" and HW60 onwards. On the label of my module i find:
I also know that mentioned modules can only keep one single language (first multilanguage module was 14D212) and usually it is not possible to change it.
BUT - hey, as we are here on a hacker forum, let's see if there is really no way of doing it?!
Who want's to assist?My first interest is of the update files for the module. I attached the latest available version of it. They are for "Sound & Connect" modules only, so only applicable to 19C112. Also there where no public updates for 19G488 available (as far as i know...).
All 19C112 are equiped with an USB-Port, where a usual MINI- or MICRO-USB cable would fit, to install the update. Only place all files from the ZIP onto a FAT32 formatted stick and put it into the USB plug of the glovebox. Turn on the radio and it should show "Update in progress" or something like that.
In the ZIP you find files for various languages (look at pre-last char). The module will only fetch the "right one" for itself. So if it is an *-B* (German) it will only use the 8M5T-14D511-BV.* files. (Note that "14D511" is the partnumber of the software, not the hardware).
There are two files for each language, both about 7 MB in size:
- 8M5T-14D511-BV.vbf
- 8M5T-14D511-BV.bvc
Let's take a look at the interesting parts of the header:
Code: Select all
sw_part_number = "8M5T-14D511-BV";
ecu_address = 0x772;
As for any update we should remind that there comes a SBL first and so we read:
"SBL-MCU V 4.700 30-07-12 RX-42 HW60 (c) Nokia"
This tells us that the update would only apply on modules of type "RX-42" and HW60 onwards. On the label of my module i find:
