Service updates help you keep your system at the latest software maintenance level.
http://www.ibm.com/software/data/db2/eas/relationship/support.html
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To download the latest service updates, you need to register with the IBM Software Internet Delivery site. The URL is http://www14.software.ibm.com/aim/web/home.html.
This site entitles customers to download service updates directly from the Internet. After registering, you need to add the Service Key to your registration. The Service Key is the 10-digit number on the Service Key Card that is provided with the product. Then you can download the product that matches the key you have entered. You may register multiple keys to the ID you created when you registered.
The Service Key must be treated with the same care given to the base product in terms of Export and Import regulations, since it provides access, through the Web, to code which contains encryption technologies. Care should be taken to read and comply with the text presented on the Authorization to Download Web page. You must agree to these terms prior to being allowed to download.
The Service Key can be used by only one person. Once registered to an individual, it cannot be registered to another individual.
When attempting to download manufacturing refreshes from the site, you must make sure that you select the product version, the language and the encryption correctly.
Please also note, that this key will provide you with access to the product as long as service is generally provided for this level of code.