10 Replies Latest reply: Oct 20, 2010 10:37 AM by b noir
belinda2 Level 1 (0 points)
i need help as i would like to upgrade to itunes 10. I have tried absolutely everything such as restarting computer and resetting tools on internet.

it installs perfectly but once it has finished it comes up with an error message saying unknown publisher. this application has a n invalid signature

please help as i need to upgrade my ipod touch version to 4.1 as well as itunes 10.

acer, Windows Vista