Language and game tutorial / manuals

[Laynord]

Hi so to set the stage i work for a casino in france and we have some somewhat old machines from IGT / bally / cirsa / novomatic and others
I was looking for advice on how to find manuals / game rules for the machines and if there is a way to change the language on them
Contacting the machine makers only lead to despair and loops of people not knowing what to direct you to
For specifics i was looking :

- to know if there was a way to add languages and where to download "language packs" or equivalent files to machines from Azure such as "The gold" and "Magma Repeat 7's" Innovator lineup as they seem to use the same software under the hood and seem to support multiple languages as they have an option between usa / chn and uk / chn or if we need to call in a technician

- If i can somehow get rulebooks for games like Hexbreaker 2 and Taurus

- If i can either get rulebooks for bally slot machines in the v22 / v26 era that would be public and either in french or translatable ( i can do it i just need to find any material )

My superior is currently trying to go through emails with the official makers but even they dont know if they still have / can give / know where are such manuals as it seams some games like the gold dont even exist anymore on some product pages

Thanks for any answers