Trying to update the Splunk Add-on for Unix and Linux from 5.2.1 to 5.2.3, do you need the original password?

I'm trying to update Splunk_TA_NIX from Version: 5.2.1 to version 5.2.3, but the admin/passwd doesn't seem to be working. The admin passwd has been changed since the app was originally installed and I currently don't have access to the old passwd. I've tried the current admin:psswd, my splunk acct. credentials, and the default admin:changeme "no dice". I was wondering if you need the original password, and if so, is there a way to force the Splunk app to use a new admin password if changed (if possible)? Thanks I'm also assuming the admin:passwd its looking for is same one we use to log in to Splunk Enterprise.