Upgrade Instructions
Warning: Always previously back up your MyBB database, and any custom themes you have before attempting to upgrade!
Unzip the release archive to your computer using an archive utility capable of decompressing the download format you chose (Winzip)
Using an ftp client (FlashFXP), upload the contents of the 'upload' directory to the directory in which you have a previous version of MyBB installed, with the exception of uploading of the following files:
./inc/config.php
./inc/settings.phpIn your browser, visit the URL where you installed your forums, appending /install/upgrade.php on to the end of it.
If you installed your forums to http://www.yoursite.com/forums/, then you would visit http://www.yoursite.com/forums/install/upgrade.phpSelect the version of MyBB which you were previously running and click 'Next.' Follow the upgrade process through making sure each step is completed successfully before clicking 'Next' to continue with the next steps of the upgrade process.
Once the upgrade process has completed, please remove the install directory from your web server and follow any remaining instructions in the upgrade wizard.