The newest version on nordic website is 11.0 “production ready”: http://developer.nordicsemi.com/nRF5_SDK/nRF5_SDK_v11.x.x/ This is stable version certified by Bluetooth SIG and the first stable version for nRF52 series. Also this is the first version that unifies development between nRF51 and 52 series. Your BSP generator doesn’t work with this and modifications that I’ve tried to make allow to generate BSP pack but code doesn’t compile.