Please see the below Information Article addressing the "Software installation and de installation" issue and instructions on how to troubleshoot and resolve the problem.
Problem: Installation of third party software on the media device. After reboot the software has dis appeared.
Cause: Antivirus software is Enabled.
Solution: Disabling the Antivirus software temporarily will insure proper installation of the third part software. After, when reboot is performed the software will not dis appear. However, must return to the antivirus to re-enable it to protect the media player device and content.