How to install custom fonts on Fire HD 10 (2021)?

[sensboston]

Fire OS doesn't support Russian (or any Cyrillic-based language), and Amazon, for the strange reason, used stripped/limited "standard" Android fonts shipped with Fire HD.
My favorite ebook reader (FBReader) renders Russian ebooks using some weird Cyrillic font (not a standard Serif).
So, my question is: how to install my own/custom fonts on Fire HD 10?

 

[AmznUser444 Dev]

Fire OS doesn't support Russian (or any Cyrillic-based language), and Amazon, for the strange reason, used stripped/limited "standard" Android fonts shipped with Fire HD.
My favorite ebook reader (FBReader) renders Russian ebooks using some weird Cyrillic font (not a standard Serif).
So, my question is: how to install my own/custom fonts on Fire HD 10?

You have to read the FAQ on the FBReader website

https://fbreader.org/faq-page#t29n240

 

[sensboston]

You have to read the FAQ on the FBReader website

https://fbreader.org/faq-page#t29n240

Thanks! But that was my mistake, sorry. Fire OS fonts do support Cyrillic (it's a full featured fonts, my assumptions was wrong), but the book I reading was in epub format (not fb2), and FBReader has different settings for epub reading. After adjusting settings, I've achieve my goals