Phone won't install SUA at all

[NickT88]

So pulled out an old laptop to install SUA since it has USB 2.0. I was hoping I could use it to try and update to 6.0. Well my phone has decided to start doing something extremely annoying - When I click on the Installer icon you use to install the SUA, it brings up Motorola Device Manager installer. After it does that, it takes a second to "download" the installer. When I select "Install" it just closes and does nothing! I went and tried this on my new computer and it does the same thing... My phone apparently doesn't want me to do anything that could upgrade it anymore... What up with this Verizon?