Hello AhGang,
You should go to ni.com/src
Here select "By Product" and Software Upgrades and Maintenance Releases.
Then go to LabVIEW and afterwards select NI LabVIEW 8.6 Toolkits.
There you can find it.
Kind Regards,
Thierry C - CLA, CTA - Senior R&D Engineer (Former Support Engineer) - National Instruments
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