How do i reinstall sydney pro?

I have the zip but its showing an error when i try to reinstall it?

Hello there,

That error message indicating that you’ve already installed Sydney Pro theme before. You’ve to delete it first by switching to the default WordPress theme, then click on the Sydney Pro thumbnail. In there click the delete link. Or you can use cPanel file manager or FTP it.

Regards,
Kharis

How do I switch to the default wordpress theme? Im a little confused.

Figured it out. Thank you.