How to set CS pin on Beetle BLE/Bluno Beetle to Adafruit SD Card Breakout - Initialization Failed!
The ICSP header labels on the Wiki page are wrong. In the schematic here the ICSP header has the same pinout as other Arduinos. The legend doesn't match the picture on the Wiki page but is true:     


ICSP1: Atmega 328P
ICSP2: CC2540


The ICSP header is the inner one. Is right on the pictures.
At pin 1 on board the corner of the white square around pins is skewed. The pins are from left to right first row Eeset, CLK, MISO, second row Ground, MOSI, 5 V.

pdf schematic for the board