Instructions to delete a language to Amgoo devices

Amgoo AMGOO AM513 Amgoo AMGOO AM513
Amgoo AM312 Amgoo AM312
Amgoo AM508 Amgoo AM508
Amgoo AMGOO AM506 Amgoo AMGOO AM506
Amgoo AMGOO AM503 Amgoo AMGOO AM503