You will want to do this in steps (3.unknown -> 6.3 is NOT going to work), and follow the documentation at https://confluence.atlassian.com/display/JIRA/Upgrading+JIRA
There is not a lot more we can tell you - you need to read the documentation, plan the steps of upgrade appropriate for your site and test it.
@Nic Brough [Adaptavist] : Hi Nic,
I have JIRA 3.0 Instance which i have upgraded to 4.4.5 this is upgraded using TAR file on Unix Box, Can you please let me know if i can upgrade the same to 6.3.13 with BIN.
Using same SQL Database and Home and Installation Directory.
Atlassian Summit is an excellent opportunity for in-person support, training, and networking.Learn more
Hi, everyone! Molly here from the Jira Service Desk Product Marketing Team :). In the spirit of this month's august-challenge, we're sourcing stories of Jira Service Desk activation fro...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs