Support » Installing WordPress » Upgrading 2.0.2 to 2.5

  • BarrySamuels


    I am running WordPress 2.0.2 (that’s what it says at the bottom of the page) and was thinking of upgrading to the latest version. I find upgrades like this rather worrying in case something goes wrong so I though I’d found the ideal solution. I would upload a new copy then update the wp-config.php file to point to my current database and see if it all works. I went through a similar exercise when upgrading my forum although that doesn’t use a database.

    Then it occurred to me that the update may change the MySQL database structure which would mean I couldn’t go back to the old version. Is that the case?

    I also have a theme called ‘Blue Horizon’ installed which I want to keep. Does anyone know if that will work with the new version of WordPress.

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  • Roy


    Of course you CAN roll back, but your database will indeed be much altered when going from a stone-age WP to a more recent one. Of course you can just backup your database (there’re plugins to do that) just in case (you should do that anyway). I don’t know if your theme still works, but there’s some functionalities added since 2.0.2, like widgets so you might have to change a few things before everything works properly again (or just leave the widgets for what they are). What you can do too, is just make a test site do try a few things before you upgrade.




    Before I upgrade I import everything into a second database (test that this works by temporarily pointing to the second database in wp-config). Then I upload the new WP core files (except those in the root) into folders named eg: wp-includes-abc etc (or some such thing). And then I delete the root wp- files and upload the new versions. Finally I change the names of the original wp-includes etc folders to something else and change the names of the wp-includes-abc etc folders to the correct ones – wp-includes etc.

    Then run /wp-admin/upgrade.php

    If something goes wrong with the upgrade, all I need to do is (i) reverse the folder re-naming, (ii) replace the root wp- files with the originals (from backup), and (iii) point to the second database in wp-config. This would quickly take me back to where I was before the upgrade.

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