Yamaha has just released Tyros2 OS version 1.11. This update:

1. Adds a function to automatically set an instrument when using IDC service.
2. Fixed a problem that song data containing a lyric event at a certain position is not played back properly

It's available for download on Yamaha's website, and includes a downloadble .ZIP file which includes 5 PRG files, and a PDF file with installation instructions:

Click on the following LINK:
http://music.yamaha.com/products/downloads.html?productId=805

Scott