Hello Fred,
- You can find the KSDKv1.3 at here :
Software Development Kit for Kinetis MCUs|NXP

THe kinetis SDK1.3 Mainline version includes this k26 :

-About install KSDK into KDS, please refer to the DOC under KDS:
KDS_v3\doc\KDS_Users_Guide.pdf ->4.2 Installing Kinetis SDK into KDS
- You also can use KSDKv2.0 , about how to install and use SDKv2.0 on KDS, please refer to :
Using Kinetis Design Studio v3.x with Kinetis SDK v2.0
Hope it helps
Have a great day,
Alice Yang
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