Jumper t8sg v2 plus Carbon Edition Voice support ?

Hi, guys i really need you help and information.

- I just bought Jumper t8sg v2 plus carbon edition and i got info the tx didn't use Oled anymore is that true ?

- And i see in the description this tx have built in voice support but how to install the voice (it's seem have speakers in there see my photo) ? Because i think its just have to copy file mp3 to microsd and then voala it's will Work but actually is Not.
If yes support how i supposed to do ?

- And my default firmware is t8sg v2 v5.0.0 abc5dcf, do i have to update the firmware ?

I hope you can help me with nice answer
Thank you.

I am having trouble as well i did all the correction on the hardware ini file dropped the voice ini in the media folder formatted the sd card in fat 32 and dropped the mp3 file in my sd card but nothing!
Any help would be appreciated please

UPDATED

For voice support it's work. Looks like my file voice.ini is crash or corrupt or something but i try to download www.deviationtx.com/downloads-new/catego...0-moeder-voice-packs and then i only take the voice.ini and copy in sd with my female voice mp3 and Voila.