Customers are able to download the Hotfix from the TIBCO Support Web page (https://support.tibco.com) using their username and password.
Once logged on customers can find the Hotfix under the Download Menu :
Administrator/5.12.0/hotfix-01 

OR
The customer will be able to download the Hotfix by using the below link to Administrator/5.12.0/hotfix-01 : https://support.tibco.com/s/hotfixes?id=a011a000009RwpwAAC

Please refer to  Article 000022290 for information about accessing all other hotfixes.

Please contact TIBCO Support if you have any problems finding or downloading this hotfix.
Listed below is a summary of updates included. Refer to the associated readme document for any additional information.

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Closed Issues in 5.12.0_HF-001 (This Release)

ADM-6249
TIBCO Administrator GUI is now properly displaying the Chinese and Korean characters.
To apply this fix, tibcoadmin.client.encoding=UTF-8 needs to be set in the
<tibcohome>\administrator\domain\<domainName>\bin\tibcoadmin_<domainName>.tra file.
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OS: All

TIBCO Administrator 5.12.0 Hotfix 01 is now available