i'm trying to upgrade my magento1.8 to magento1.9 in my local magento

how to upgrade it with all my local files and custom changes?

i have tried this in local magento, but not working.

could someone explain it step by step.

closed as off-topic by Sander Mangel, Marius, Foo Bar Jun 14 '14 at 13:45

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions on problems in code you've written must describe the specific problem and include valid code to reproduce it. For help writing short, self-contained syntactically-valid examples, see: http://sscce.org/" – Foo Bar
If this question can be reworded to fit the rules in the help center, please edit the question.

  • Please provide information about a specific issue. What you're asking is too broad. – Sander Mangel Jun 14 '14 at 10:31