Russian letters in the file name

[alexey127]

good afternoon
tell me what settings need to change the file name to be written in Russian letters?
Now if the contact is in your phonebook is displayed like that "[40%3A %D0%9E%D0%BB%D0%B5%D1%81%D1%8F]_40-10_20130828121053(92).wav"
but should be like that "[40 Олеся]_40-10_20130828121053(92).wav"