We are trying to enable Bluetooth and Wifi in sabresd imx6q board running Android Lollipop 5.1.1 using Murata module EVB Type XQ.As per the Murata document ,to have the BT and Wifi support we are supposed to modify the files present in /system/etc/firmware/bcm/ from adb shell in linux machine .But to write files on to the system partition we need to have root access.
For example :
root@sabresd_6sx:/ # cp /sdcard/bcmdhd.cal /etc/firmware/bcm/
Inorder to copy files from /sdcard to /system we need to have root access ,so the above command was not executed and the output was as follows.
error:/Read -Only-File System