How to upgrade redmine to easy redmine in centos?

Source Google for this image

1) Redmine Installer Ruby Gem

   $ gem install redmine-installer

2) Copy the zip file that download from easy redmine to centos server

3) Type command below:

   $ redmine upgrade PATH_TO_PACKAGE

•    After type this command:

1. Type yes
2. /var/www/html/our_redmine_project   (Specific the directory that point to old redmine that you          already intalled)
3. Type Database Password

4) make sure that webserver has Full access public, files, log, tmp folders
   - bundle install --without development test
   - bundle exec rake easyproject:install RAILS_ENV=production
   - service httpd restart