Samsung UE49KS7000U main BN41-02504A dump bin EMMC firmware
Mainboard/chassis: BN41-02504A
Painel display LCD: CY-QK049FLLV3V
Dump firmware EMMC KLM8G1GEND-B031_IC702 + W25Q40CL_IC803 + W25Q80V_IC804 + 24_512_IC1402
Tamanho do ficheiro (file size): 3,4GB

Xiaomi L65M7-EA main DKTV-B014-T963-AC dump bin EMMC firmware
Mainboard/chassis: DKTV-B014-T963-AC
Painel display LCD: TV23400102
Dump firmware EMMC KLM8G1GETF-B041
Tamanho do ficheiro (file size): 805MB

NEO TF-32900FHD 17MB62 USB Update firmware atualização software USB
USB Update firmware upgrade
Atualização de software via USB
Actualizacion de firmware por USB
Micrologiciel de mise à jour USB
USB-Firmware aktualisieren

It's strange that you don't have other countries. It is certainly a version made just for Italy.
I am attaching a USB update for a TV with the same card but from another brand.
If you want to test it is at your own risk and you should be aware that it may not work or even cause the TV to stop working if it is not compatible. If you want to take a risk, proceed as follows:
Download the file and unzip it.
Place the files on a pen drive formatted in FAT32 format, you must place the files in the root of the disk (not inside a folder).
Connect the USB flash drive to the TV's USB port, turn off the TV, press the "power on" button on the TV and at the same time turn on the TV to the power supply. You should start the USB update boot.
But remember, I'm not responsible if something goes wrong.

Some TV software uses an audio identification system based on the country selected in the installation menu, but if the audio codec is not associated with the country, it uses a different one. There are usually audio options in the menu, or there is an audio button on the remote control that allows you to change the language of the channel that is being displayed. You can also try a factory reset and test with a different country. I'm in Portugal and I've had similar problems with some TVs, it was necessary to choose a different country in the installation menu for it to assume all the audio codecs and work. They weren't TVs with this motherboard, but you can try doing this and you won't lose anything. It is also worth remembering that some more basic TV models are not compatible with more advanced codecs, especially high compression audio or video codecs, but this is especially the case with audio. I don't know if this is your case but I'm raising a possibility.

Hi,
this TV has the following features:
Board Type: TP.SK105S.PB802
Panel Info: T320XVN02.H

You have the last version, i think.

Erisson 43FLES92T2SM main TP.SK506S.PB802 dump bin EMMC firmware
Mainboard/chassis: TP.SK506S.PB802
Painel display LCD: HV430FHB-F90
Dump firmware EMMC KLM8G1GETF BN41
Tamanho do ficheiro (file size): 1,7GB

TUVIO TQ55UFBHV1 main TP.SK706S.PC822 dump bin EMMC firmware
Mainboard/chassis: TP.SK706S.PC822
Painel display LCD: ????????
Dump firmware EMMC KLM8G1GETF-B041
Tamanho do ficheiro (file size): 900MB

Panasonic TX-49FX700E main TNPH1197 dump bin EMMC firmware
Mainboard/chassis: TNPH1197
Painel display LCD: TXFZL49KHAA
Dump firmware EMMC KLM4G1FEPD-B031
Tamanho do ficheiro (file size): 590MB

Samsung PS51E530A3W main BN41-01785A dump bin nand flash firmware
Mainboard/chassis: BN41-01785A
Painel display LCD: ????????
Dump flash NAND IC1301