try right click on the download and save it to your desktop. If that fails let me know and i'll email it to you. Also have you the latest ver of Acrobat reader
you may have a old manual which your dealer should have updated. I was in the same position
instructions are here. Covers everything you need to know
http://www.350z-uk.com/forum/viewtopic.php?t=2713
it's the laser thats going. Had it happen in the TT which was bose also. Luckily in the TT the CD was a separate unit and Audi would do a recon exchange for £90. Don't know if Nissan will do the same seeing as some cars are now out of warranty.