NX Update

I want to update my NX 8.5.3.3 MP1 to MP3. I have account in GTAC. Could you give me the URL from where I can download MP3?

Open a session of NX, go to the Help menu and choose "Online technical support" -> "GTAC File server". This will point your default browser to the correct page; login with your account info, choose NX/Unigraphics from the product selection dropdown, then drill down to your version and which update you wish to download.