Magento 1.8 Upgrade Tutorial- Learn how to how to upgrade from Magento 1.4, 1.5, 1.6, 1.7 to 1.8? Read more at: http://tiny.cc/s0m67w

1. How to upgrade from Magento
1.4, 1.5, 1.6, 1.7 to 1.8?
A Step by step tutorial of Magento 1.8 Upgrade.
We strongly recommend you all to try this upgrade process in a test environment first which
would be separate from your current production environment:
Step# 1- Create Testing Environment
In the first step, you need to create a testing or
parallel development system which should be similar
to your existing production system. Make sure you
follow all the upgrade steps on this test system.
Step# 2- Backup Database and Files
Now, take a complete backup of your database (live website) and
archive the file system which include all your extensions, themes,
customizations and media files etc. This can be done via FTP client.

2. Step# 3 Import Database and Files
In this step, you need to create a new database for your test
environment and import the database (backed up in last step) in
this new database.
After Database import, copy your extensions, themes,
customizations and media files that you backed up in step 2.
Step# 4- Some Important Changes and Checks
Copy local.xml to magento-install-dir/app/etc
Go to your test system base URL in web browser
Check if test and production systems are identical
Note: If both the systems are not identical to each other, then try
to upgrade again.
Read Complete Magento 1.8 Upgrade Process
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