Thread:Project:Support desk/How to Upgrade MediaWiki 1.12 to 1.24

Currently, we are using MediaWiki 1.12 and wanted to upgrade it to the latest stable version i.e. MediaWiki 1.24. The associated PHP version is 5.1.6-39 and MYSQL version is 5.0.77-4. Please provide me the steps which needs to follow. The development environment is WINDOWs and our PROD is linux based. Kindly help me on this regards.