Showing Russian OSD should work ok, if Font Page 1 is the same as original. If it was replaced, that may make problems in showing letters in OSD. We had this problem with Polish menu in a player 393 that was bought in Moscow. Leaving original Font Page no. 1 solved the problem (but unfortunately Polish letters are freaked.

)
It looks like there are some differences between the same types of players, sold on European and Asian market.