This release contains Security fixes, a Data Corruption mitigation, bug fixes and other minor improvements.   To upgrade: First create a backup of your USB flash boot device: Main/Flash/Flash Backup If you are running any 6.4 or later release, click 'Check for Updates' on the Tools/Update OS page. If you are running a pre-6.4 release, click 'Check for Updates' on the Plugins page. If the above doesn't work, navigate to Plugins/Install Plugin, select/copy/pa