AEM 5.6.1 SP2 Adobe Granite SSO Authentication Handler not working

Im using Adobe Experience Manager (5.6.1.20130606) and was able to successfully configure the [1] SSO authentication. I have tested using cookie, header and query parameter all working as expected.

[1] https://docs.adobe.com/docs/en/cq/5-6-1/deploying/single_sign_on.html#Configuring SSO

After installing the [2]  package SP2, suddenly SSO got broken. I have checked my SSO configuration nothing is changed but all of a sudden SSO authentication cannot work anymore.

[2 ] https://docs.adobe.com/docs/en/cq/5-6-1/release_notes_service_pack_2.html

Existing Adobe Granite SSO Authentication Handler config:

Path: /
Service Ranking: 0
Header Names: cq-user
Cookie Names: cq-user
Parameter Names: cq-user
User Map:
Format: AsIs
Trusted Credential Attribute: TrustedInfo

Curl Test:

C:\Users\Homer>curl.exe -D - -H "cq-user:admin" http://localhost:4502/siteadmin
HTTP/1.1 401 Unauthorized
Connection: Close
Server: Day-Servlet-Engine/4.1.52
Date: Wed, 23 Sep 2015 04:08:47 GMT
WWW-Authenticate: Basic realm="Sling (Development)"

Is there anyone here had encountered the same issue? Is there any available fix for this?

Thanks in advance for those who will reply.