Hello,
Please refer to each stack's release notes documentation available in the docs folder.
C:\NXP\MKW41Z_ConnSw_1.0.2\docs\wireless\SMAC
C:\NXP\MKW41Z_ConnSw_1.0.2\docs\wireless\IEEE 802.15.4
C:\NXP\MKW41Z_ConnSw_1.0.2\docs\wireless\GENFSK
C:\NXP\MKW41Z_ConnSw_1.0.2\docs\wireless\Thread
C:\NXP\MKW41Z_ConnSw_1.0.2\docs\wireless\Bluetooth
If you want to connect a Bluetooth Low Energy device to your board, you must load the BLE stack into your board.
I'd recommend you to go through the FRDM-KW41Z|Freedom Development Kit|NXP --> Getting Started tab.
-JC