I try to upgrade my existing install of jira software in 8.5 with the latest (8.20.1) with bin packet but the install script (after select 2 for upgrade) say :
"Select the folder where you would like Jira Software to be installed.
Where should Jira Software be installed?
[/opt/atlassian/jira]
It appears that Jira is already installed in the directory you selected. Please choose a different directory."