Transfer accounts, blogs and databases Part 2

Now open blog or website, you’ll find scrambled layout and errors. Do Not worry.
It’s time to upgrade.

I put an empty index.html file on server with title, “We’re Upgrading”. The html file won’t make conflict with WordPress’ index.php file.
Why do I put an empty index.html file?
1. I want to tell my visitors that My Blog or Website is in upgrading stages. So they can come back later
2. We need to delete old WordPress files, and we don’t want your visitors see the process.

I learn this from my previous mistakes, when i was upgrading my blog, i just copied the new WordPress on Old Wordpress files, i got errors on WP ADMIN (these also related to Plugins compatibility). I decided to re-run the process

Turned off WordPress’ plugins, delete all old WordPress files, except wp-content directory, wp-connfig.php (you can read WordPress Upgrade Manual). Upload new WordPress files, except wp-content directory, wp-config.php. Run /wp-admin/upgrade.php.

You must check Plugins Compatibility with this list from WordPress before turned on the Plugins. These plugins can cause errors on WP Admin.

Delete index.html file from your blog/website directory. Your blog/website showed.

Note : Upgrade Google Sitemaps Plugin to the latest version, which is compatible with WordPress 2.3.1