Oh no, don't wanna reflash, but maybe I'll have to, as if it's working on your sys, I should be able to get it working. Did you flash to the latest PR 1.3?
I just tried now without having the partition mounted, started modrana and it DOES route in Russian, though it's freaky as it's a bunch of `in 100 meters turn on letter code 4 a, letter code 5 e, letter code b a...' as it substitutes for the Unicode, I'd assume this'd super uncomfortable having to listen to this while driving,