Need Help On JIRA Upgrade From 8.5 to 8.13

[Int@027412]

Dear Team ,

Please help me on JIRA upgrade acitivity . My JIRA Softwares running on  server having two JIRA services 

1.For Testing environment

2.Another one for Prod environment

My current version of JIRA is 8.5.3. I would like to upgrade JIRA 8.13 for both testing and Prod environment. Kindly suggest me , which procedure would be best option for my scenario . 

1.Upgrade using tar.gz procedure 

2.Upgrade using installer file

Kindly suggest me , so that i can upgrade accordingly. 

Thanks and Regards

Sugyan Swain