The customer will be able to download the Hotfix from the TIBCO Support Customer Portal Web UI using their username and password for the TIBCO Support Web page. Once logged on they can find the Hotfix under the Download Menu :

AvailableDownloads/Hawk/6.2.1/hotfix-03

OR

The customer will be able to download the Hotfix by using direct link to Hawk/6.2.1/hotfix-03
https://support.tibco.com/s/hotfixes?id=a012L00000QI0BlQAL

OR

Refer to  Article 000022290 : How can TIBCO customers download / access all GA hotfixes
Link to Article  000022290 :https://support.tibco.com/s/article/hotfix

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.

======================================================================
Closed Issues in 6.2.1.hotfix3 (This Release)

HK-9516
Support TLS 1.2 while configuring hawk agent to send mails
This release fixes it.
Add the following property to the RuleBaseEngine module of
the hawkagent.cfg file to enable support for STARTTLS:
-email_smtp_tls_required true
Add the following property to the RuleBaseEngine module of
the hawkagent.cfg file to enable support for SSL/TLS:
-email_smtp_ssl_required true
Add the following property to the RuleBaseEngine module of
the hawkagent.cfg file to trust a SMTP Server.
If set to "*", all hosts are trustedHosts. If set to a whitespace separated
list of hosts, those hosts are trusted. Otherwise, trust depends on the
certificate the server presents.
-email_smtp_tls_trust *

HK-9538
Clear Action is unable to send Notification/Email if the content contains
only Insert Variables.

HK-9514
Occasionally, a "System error" is returned when you undeploy a rulebase
from the Hawk Console.

HK-9346
Unable to deploy a rulebase which uses the getQueue method from
the HawkController microagent

HK-9634
An error is returned when you invoke methods such as getServerInfo on a standby
EMS server with JSON configuration.
To fix this issue, a new function named isServerActive has been added to the
EMS microagent. This function returns a boolean value which indicates whether
the EMS server is in active state or in a standby state.

HK-9633
[UI] A rulebase using a boolean test condition does retains it's original
condition when the condition involves 'false' case.

HK-9627
An error is returned when a rulebase is deleted or undeployed by the user
that is loaded by using the loadRuleBaseFromFile method.

HK-9541
There is no User Profile Icon on the top-right side of the page
======================================================================