Czech Codepage, Czech Fonts, Czech - firmware is here
http://www.pepak.net/e-books/sony-re...s-600-cestina/
Czech fonts for txt, rtf, lrf and menu
and
For ePub - redirect userStyle.css to internal memory (your directory epub/userStyle.css - custom fonts)
Redirect epub fonts to internal memory (your directory fonts/*.ttf)
Thanks for Pepak, Boroda, Porkupan