diff --git a/lab-data/preempt-rt/stm32mp157a_dk1_rt_defconfig b/lab-data/preempt-rt/stm32mp157a_dk1_rt_defconfig
index c7d3405422..18aef908f3 100644
--- a/lab-data/preempt-rt/stm32mp157a_dk1_rt_defconfig
+++ b/lab-data/preempt-rt/stm32mp157a_dk1_rt_defconfig
@@ -1,5 +1,6 @@
 BR2_arm=y
 BR2_cortex_a7=y
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_6=y
 BR2_TOOLCHAIN_BUILDROOT_CXX=y
 BR2_ROOTFS_OVERLAY="board/stmicroelectronics/stm32mp157a-dk1/overlay/"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/stmicroelectronics/common/stm32mp157/post-image.sh"
@@ -27,21 +28,27 @@ BR2_TARGET_ROOTFS_EXT2_4=y
 BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_TARGET_ARM_TRUSTED_FIRMWARE=y
-BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_VERSION=y
-BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_VERSION_VALUE="v2.5"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_LATEST_LTS_2_8_VERSION=y
 BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM="stm32mp1"
-BR2_TARGET_ARM_TRUSTED_FIRMWARE_ADDITIONAL_VARIABLES="STM32MP_SDMMC=1 AARCH32_SP=sp_min DTB_FILE_NAME=stm32mp157a-dk1.dtb E=0"
-BR2_TARGET_ARM_TRUSTED_FIRMWARE_IMAGES="*.stm32"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_FIP=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_BL31=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_UBOOT_AS_BL33=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_UBOOT_BL33_IMAGE="u-boot-nodtb.bin"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_ADDITIONAL_VARIABLES="STM32MP_SDMMC=1 AARCH32_SP=sp_min DTB_FILE_NAME=stm32mp157a-dk1.dtb E=0 BL33_CFG=$(BINARIES_DIR)/u-boot.dtb"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_IMAGES="fip.bin *.stm32"
 BR2_TARGET_ARM_TRUSTED_FIRMWARE_NEEDS_DTC=y
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2023.04"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="stm32mp15_trusted"
+# BR2_TARGET_UBOOT_FORMAT_BIN is not set
 BR2_TARGET_UBOOT_NEEDS_PYLIBFDT=y
 BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
-# BR2_TARGET_UBOOT_FORMAT_BIN is not set
-BR2_TARGET_UBOOT_FORMAT_STM32=y
+BR2_TARGET_UBOOT_FORMAT_DTB=y
+BR2_TARGET_UBOOT_FORMAT_CUSTOM=y
+BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME="u-boot-nodtb.bin"
 BR2_TARGET_UBOOT_CUSTOM_MAKEOPTS="DEVICE_TREE=stm32mp157a-dk1"
-BR2_PACKAGE_HOST_ENVIRONMENT_SETUP=y
+
+# Additional tools
 BR2_PACKAGE_HOST_GENIMAGE=y