See attached zip file for translation files, it consists of:
*.strings - Original strings extracted from *.class files, use it for reference only.
*.translation - Strings files with Russian translation in UTF-8 encoding. You must open each *.translation file, and replace Russian translation to your. Each line contains:
<original string>TAB<translated string>
Also, strings may contains "~~" or "$$" symbols, this is replacement for CR, LF, You must copy it to translation too into same place.
There also some of *.properties files, to translate it, I used ResourceBundle Editor plugin for Eclipse. But if you simple replace English strings with your (use UTF-8 encoding), I will convert it to proper format later.
When you done, send this files back to me and I will made update.bin file.
P.S. I can make update for 3.0.2 and 3.0.3 firmware only!