These two questions have been added to the Style Update website FAQ Where are the new styles on my Audya?
You can find the new styles by pressing the "USER STYLES" touch tab and selecting the "Unplugged" category of your styles. We did this to avoid causing problems with your current registrations, we reccomend moving the styles to a category of your choice, or simply use from the present location.I installed OS50a on my Audya (76 key) from the USB stick and now the keyboard is in the Italian Language.
Simply press the MENU touch tab, select F1 (Lingua) followed by F1 again (Inglese). Press EXIT, SAVE, then F6 (Custom Startup).