This is the fastest way to upgrade/update Mediawiki old version to the Latest Version 1.14.0

I've mediawiki installed on the server with 1.6.x version so i just want to upgrade it to the latest version.

First We need to backup mediawiki files and DB.
You need to change the server path to your server own path.
Login into the server.

Backup mediawiki web files

[code]#cd /home/mediawiki/
#tar -cf mediawiki.tar public_html
#cp mediawiki.tar /root[/code]

Backup mediawiki MySQL DB

[code]#cd /root
#mysqldump -uwiki wikidb > mediawiki.sql -p[/code]

You will see a mediawiki.sql file in /root

Download Latest mediawiki stable version

[code]#cd /root
#wget [url="http://download.wikimedia.org/mediawiki/1.14/mediawiki-1.14.0.tar.gz"]http://download.wikimedia.org/mediawiki/1....i-1.14.0.tar.gz[/url][/code]

Unpack mediawiki

[code]#tar xvfz mediawiki-1.14.0.tar.gz
#cp -R mediawiki-1.14.0/* /home/mediawiki/public_html[/code]

Run Update Script

[code]#cd /home/mediawiki/public_html/maintenance
#php update.php --aconf ../AdminSettings.php[/code]

wait... until finished.
You're done !!

Troubleshooting "No superuser credentials" error

[code]#cd /home/mediawiki/public_html
#cp AdminSettings.sample AdminSettings.php 
#pico AdminSettings.php 

#### Edit below lines to match your DB user and password ####
$wgDBadminuser      = 'wiki';
$wgDBadminpassword  = 'wikipassword';[/code]

After edit the AdminSettings.php.
You need to reapply update

[code]#cd /home/mediawiki/public_html/maintenance
#php update.php --aconf ../AdminSettings.php[/code]

wait... until finished.
You're done !!