Duxbury DBT contains a braille translator for text written in the French language.
Duxbury DBT version 12.7 contains a braille translator called West African languages for text written in hundreds of languages throughout Africa. Use this translator for the non-colonial languages of Guinea.
Here is a short 5 page description of this braille system, translated into 30 different languages. Here is the page in the pdf for French.
Many language are supported by Google Translate. Use this link to see what the Duxbury DBT Help System looks like in your choice of languages: Duxbury DBT allows you to translate the DBT Help file into dozens of other languages.