diff --git a/board/phytium/post-image.sh b/board/phytium/post-image.sh
index 53996cb63bfa6a608f295cf3e39d18e917aa095f..a2e5ca2c9bf40eb94d0cc65b1e56c443d0eb01ff 100755
--- a/board/phytium/post-image.sh
+++ b/board/phytium/post-image.sh
@@ -2,7 +2,23 @@
 
 BOARD_DIR="$(dirname $0)"
 
+GENIMAGE_CFG_SRC=$(grep '^BR2_ROOTFS_POST_SCRIPT_ARGS=' ${BR2_CONFIG} | sed -n 's/.*-c \([^ ]*\).*/\1/p' | sed 's/"//g')
+CFG_FILE=$(basename "$GENIMAGE_CFG_SRC")
+GENIMAGE_CFG="${BOARD_DIR}/$CFG_FILE"
+if [ -z "${GENIMAGE_CFG}" ]; then
+    echo "Error: Cannot extract genimage config from BR2_ROOTFS_POST_SCRIPT_ARGS" >&2
+    exit 1
+fi
+
+PARTITION_UUID=$(uuidgen)
+
+cp -f "${GENIMAGE_CFG}" "${GENIMAGE_CFG}.bak"
+
+sed -i "s/partition-uuid = \"[^\"]*\"/partition-uuid = \"${PARTITION_UUID}\"/g" "${GENIMAGE_CFG}"
+echo "✅ Updated partition UUID in ${GENIMAGE_CFG} to: ${PARTITION_UUID}"
+
 cp -f ${BOARD_DIR}/grub.cfg ${BINARIES_DIR}/efi-part/EFI/BOOT/grub.cfg
+sed -i "s/root=PARTUUID=\"[^\"]*\"/root=PARTUUID=\"${PARTITION_UUID}\"/g" "${BINARIES_DIR}/efi-part/EFI/BOOT/grub.cfg"
 
 if grep -Eq "^BR2_ROOTFS_INITRAMFS=y$" ${BR2_CONFIG} && grep -Eq "^BR2_ROOTFS_SKELETON_CUSTOM=y$" ${BR2_CONFIG}; then
 	ROOTFS_DIR=${BINARIES_DIR}/rootfs
diff --git a/support/scripts/genimage.sh b/support/scripts/genimage.sh
index 459207c624a1167f37e98e89946faa5da2e16df3..8dc297a5176534ee2f11bd9204c18bc7fb2e9798 100755
--- a/support/scripts/genimage.sh
+++ b/support/scripts/genimage.sh
@@ -47,6 +47,7 @@ genimage \
 	--outputpath "${BINARIES_DIR}" \
 	--config "${GENIMAGE_CFG}"
 
+mv "${GENIMAGE_CFG}".bak "${GENIMAGE_CFG}"
 
 if [ -e ${BINARIES_DIR}/disk.img ]; then
     7zr a ${BINARIES_DIR}/disk.img.7z ${BINARIES_DIR}/disk.img