Help downloading Apps

<p>Can someone tell me how I can download OS onto my graphing calculator (Ti-84 Plus Silver)</p>

<p>Sorry far I downloaded TI connect, but I can' figure out how to put OS from ticalc.org onto my calculator. </p>

<p>Please help. Thanks..</p>

<p>whenever i try to open the file it keeps saying "file does not have program associated with it for performing this action".</p>