Well I see the request was sent to the GUP. I am not sure if it was successful or not. Here are the results from the Sylink.log file I produced via the instructions posted above. Can I be assured that this particular SEP Client received the update from the GUP?
06/14 15:40:14 [2992] </CHttpFileDownload::getRemainingBytesToDownload()>
06/14 15:40:14 [2992] <CHttpConnector::SendRequest()>
06/14 15:40:15 [2992] Unable to query return content length for SendRequest, 122
06/14 15:40:15 [2992] </CHttpConnector::SendRequest()>
EDIT: I think this means it's successful
<LUThreadProc>LU file download succeceded with HTTP status:200 and with return status:0
What was throwing me off was that "Unable to query return content length for SendRequest. This appeared to be an error.