On the left menu, go to the System Modules, open the page

This page is used to upgrade the system, install modules, upgrade the module, uninstall the module

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As above, you can see the version of system, installed modules and not install modules
 
**System Upgrade:** show the current version of system.If there are the new version, there will show the upgrade version.

**Installed Modules:** show the installed modules in the system.(the system upgrade to the next version,the installed modules will show the upgrade information if there is the upgrade)

**Can Be Install Module:** show the modules which can be used to install in the system

On the above picture,you can see the current version is 2.0-beta,and next upgrade version is 2.0

System upgrade step ,include

  * Auto download the upgrade file in the system
  * Download the upgrad file by manual(if there is no upgrade files in the system by auto)

The system upgrade file need to put into /var/www/html/asterCC/data/_cache/ .When there are the files,so reopen the `System Modules` page,you will see the `upgrade` button shown on behide,and click it will auto upgrade.

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  * System auto download the upgrade file
    On System -> Settings page,under the `ADVANCED SETTINGS SYSTEM` menu,you can see the `Auto Download UpgradePack` parameter.If it is yes,then the system will auto download the upgrade package early in the morning.If you set this parameter to no,you need to download the upgrade file manually
  * Manually download
    If you see the upgrade information,you can click the `download` button to download the upgrade package.Then you will see the picture,like this:
    
{{:en:module_manual:system_modules:systemUpdate-3.jpg?796|}}
    
Choose one to download,After finishing it,you can upload the upgrade package to /var/www/html/asterCC/data/_cache/,there are two pattern to upload

  * Upload by FTP tools
  * Upload by click the upload button on the page

When click the upgrade button,it will show:

{{:en:module_manual:system_modules:systemUpdate-6.jpg?796|}}

If you want to continue,click ok,then it will upgrade

{{:en:module_manual:system_modules:systemUpdate-9.jpg?796|}}


In the upgrade process,there will disappear several problems:

  * Upgrade package MD5 check error,like this:

{{:en:module_manual:system_modules:systemUpdate-5.jpg?796|}}

  * Configure file error,like below:

{{:en:module_manual:system_modules:systemUpdate-7.jpg?796|}}


<note tip>For above problems,you can delete the upgrade file in /var/www/html/asterCC/data/_cache/, then re-download the upgrade package file and upgrade again</note>

  * Stop upgrade process

{{:en:module_manual:system_modules:systemUpdate-8.jpg?796|}}

It doesn't have the system file's permision, so you can login the systen by SSH,then execute below code:

chmod 777 /var/www/html/asterCC/app/app_controller.php

let the app_controller.php file's permision to 777

  * 413 Request Entity Too Large

{{:en:module_manual:system_modules:systemUpdate-4.jpg?796|}}

Use SSH tool to login the system,then execute this code:

vi /etc/php.ini

open the PHP configure file,and find :

upload_max_filesize = 20M 

change 20M to 80M(the value need to high the file size of upgrade package)

upload_max_filesize = 80M

and execute :

vi /usr/local/nginx/conf/nginx.conf

open the nginx configure file,find:

client_max_body_size 20M;

change 20M to 80M

client_max_body_size 80M;

save the change,then execute

service nginx restart

restart Nginx server, and upload again.