diff --git a/openpower/configs/witherspoon_defconfig b/openpower/configs/witherspoon_defconfig
index 0935a21..f45d74e 100644
--- a/openpower/configs/witherspoon_defconfig
+++ b/openpower/configs/witherspoon_defconfig
@@ -1,8 +1,10 @@
 BR2_powerpc64le=y
 BR2_powerpc_power8=y
 BR2_KERNEL_HEADERS_4_4=y
-BR2_BINUTILS_VERSION_2_26_X=y
+BR2_GLIBC_VERSION_2_24=y
+BR2_BINUTILS_VERSION_2_27_X=y
 BR2_BINUTILS_EXTRA_CONFIG_OPTIONS="--enable-targets=powerpc64-linux"
+BR2_GCC_VERSION_4_9_X=y
 BR2_EXTRA_GCC_CONFIG_OPTIONS="--enable-targets=powerpc64-linux"
 BR2_TOOLCHAIN_BUILDROOT_CXX=y
 BR2_TARGET_GENERIC_HOSTNAME="skiroot"
@@ -17,7 +19,7 @@
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.9"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
-BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL)/configs/linux/skiroot_defconfig"
+BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
 BR2_LINUX_KERNEL_ZIMAGE_EPAPR=y
 BR2_LINUX_KERNEL_XZ=y
 BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
@@ -42,7 +44,7 @@
 BR2_OPENPOWER_CONFIG_NAME="witherspoon"
 BR2_OPENPOWER_XML_PACKAGE="witherspoon-xml"
 BR2_OPENPOWER_PNOR_FILENAME="witherspoon.pnor"
-#BR2_OPENPOWER_PNOR_UPDATE_FILENAME="witherspoon_update.pnor"
+BR2_OPENPOWER_PNOR_UPDATE_FILENAME="witherspoon_update.pnor"
 BR2_HOSTBOOT_BINARY_SBE_FILENAME="nimbus_sbe.img.ecc"
 BR2_HOSTBOOT_BINARY_SBEC_FILENAME="centaur_sbec_pad.img.ecc"
 BR2_HOSTBOOT_BINARY_WINK_FILENAME="p9n.ref_image.hdr.bin.ecc"