It is recommended that you back up your site before upgrading to a new version. That way, if something goes wrong during the upgrade process, you can easily restore your site to the earlier version. Also, it is a good idea to review the release notes for the new version to be familiar with what was changed.
Here are the detailed instructions.
To download the most recent patch package and to obtain the MD5 hash:
If you have questions about these instructions, read the Additional Information below this table.
|What is a patch?|
|Which package format should I use?|
|How do I use the MD5 hash to check the package?|
Before you actually upgrade, you really should make a backup of your site. Backup your existing Joomla site files and store all the files and database in case something gets messed up, you wont have any problem reverting back.
All upgrades should be first tested on a copy of your site before being applied to a live site.
There are different ways of installing a package file depending on your particular circumstances. If you have difficulty with one of these methods, then simply try another.
|Unpacking a package file|
|Using an FTP client to upload files|
|Using a terminal session|
Don't assume that the upgrade will work flawlessly just because the test upgrade worked. Check to make sure that nothing untoward has happened. It could be that differences between the live site and test site platforms will bring out a problem that you did not notice during testing. If you find a problem and it cannot be resolved quickly you might have to rollback the upgrade using the backup copy you created in step 2.
Hopefully all will be well and you can relax. If you have any questions before, during, or after the upgrade then please ask them on the Joomla! 1.5 Migrating and Upgrading Forum.
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