diff --git a/make/bootstrap.mk b/make/bootstrap.mk
index e0dc123c..f32ba469 100644
--- a/make/bootstrap.mk
+++ b/make/bootstrap.mk
@@ -18,7 +18,7 @@ BOOTSTRAP += target-dir
 BOOTSTRAP += libs-static
 BOOTSTRAP += libs-cross
 
-ifeq ($(BOXSERIES), $(filter $(BOXSERIES), hd2))
+ifeq ($(BOXTYPE), $(filter $(BOXTYPE), coolstream))
   BOOTSTRAP += var-update
 endif
 
@@ -34,9 +34,6 @@ bootstrap: $(BOOTSTRAP)
 
 skeleton: | $(TARGET_DIR)
 	$(INSTALL_COPY) --remove-destination $(SKEL-ROOT)/. $(TARGET_DIR)/
-ifneq ($(wildcard $(SKEL-ROOT)-$(BOXFAMILY)),)
-	$(INSTALL_COPY) --remove-destination $(SKEL-ROOT)-$(BOXFAMILY)/. $(TARGET_DIR)/
-endif
 	find $(TARGET_DIR) -type f -print0 | xargs --no-run-if-empty -0 \
 		sed -i 's|%(BOXMODEL)|$(BOXMODEL)|'
 	sed -i 's|%(BOOT_PARTITION)|$(BOOT_PARTITION)|' $(TARGET_DIR)/etc/mdev.conf
@@ -121,17 +118,25 @@ endif
 
 # -----------------------------------------------------------------------------
 
+ifeq ($(BOXTYPE), $(filter $(BOXTYPE), coolstream))
+
 var-update: $(TARGET_DIR)/var/update
 
 $(TARGET_DIR)/var/update: | $(TARGET_DIR)
 	mkdir -p $(@)
-ifeq ($(BOXSERIES), $(filter $(BOXSERIES), hd2))
-	$(INSTALL_COPY) $(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR)/uldr.bin $(@)
+ifeq ($(BOXSERIES), $(filter $(BOXSERIES), hd1))
+	$(INSTALL_DATA) $(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR)/zImage $(@)
+else ifeq ($(BOXSERIES), $(filter $(BOXSERIES), hd2))
+	$(INSTALL_DATA) $(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR)/vmlinux.ub.gz $(@)
+	$(INSTALL_DATA) $(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR)/uldr.bin $(@)
   ifeq ($(BOXMODEL), kronos_v2)
-	$(INSTALL_COPY) $(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR)/u-boot.bin.kronos_v2 $(@)/u-boot.bin
+	$(INSTALL_DATA) $(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR)/u-boot.bin.kronos_v2 $(@)/u-boot.bin
   else
-	$(INSTALL_COPY) $(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR)/u-boot.bin $(@)
+	$(INSTALL_DATA) $(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR)/u-boot.bin $(@)
   endif
+endif
+	$(INSTALL_DATA) $(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR)/stb_update.data $(@)
+
 endif
 
 # -----------------------------------------------------------------------------
diff --git a/make/linux-kernel.mk b/make/linux-kernel.mk
index 31051f8d..11d47fc3 100644
--- a/make/linux-kernel.mk
+++ b/make/linux-kernel.mk
@@ -331,21 +331,17 @@ endif
 
 # -----------------------------------------------------------------------------
 
-# install coolstream kernels to skel-root
-
-ifneq ($(wildcard $(SKEL-ROOT)-$(BOXFAMILY)),)
-  KERNEL_DESTDIR = $(SKEL-ROOT)-$(BOXFAMILY)/var/update
-else
-  KERNEL_DESTDIR = $(SKEL-ROOT)/var/update
-endif
+# install coolstream kernels into ni-drivers-bin repository
 
 kernel-install-coolstream: kernel-install-coolstream-$(BOXSERIES)
 
 kernel-install-coolstream-hd1: kernel-coolstream-hd1
-	$(INSTALL_DATA) $(IMAGE_DIR)/kernel-$(BOXTYPE_SC)-$(BOXMODEL)-zImage.img $(KERNEL_DESTDIR)/zImage
+	$(INSTALL_DATA) $(IMAGE_DIR)/kernel-$(BOXTYPE_SC)-$(BOXMODEL)-zImage.img \
+		$(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR)/zImage
 
 kernel-install-coolstream-hd2: kernel-coolstream-hd2
-	$(INSTALL_DATA) $(IMAGE_DIR)/kernel-$(BOXTYPE_SC)-$(BOXMODEL)-vmlinux.ub.gz $(KERNEL_DESTDIR)/vmlinux.ub.gz
+	$(INSTALL_DATA) $(IMAGE_DIR)/kernel-$(BOXTYPE_SC)-$(BOXMODEL)-vmlinux.ub.gz \
+		$(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR)/vmlinux.ub.gz
 
 kernel-install-coolstream-all:
 	make clean BOXFAMILY=nevis
@@ -370,6 +366,9 @@ kernel-install-coolstream-all:
 	make get-update-info-hd2 BOXFAMILY=kronos
 	#
 	make clean > /dev/null 2>&1
+	#
+	@echo -e "$(TERM_YELLOW)Align stb_update.data in $(SOURCE_DIR)/$(NI-DRIVERS-BIN)$(TERM_NORMAL)"
+	@echo -e "$(TERM_YELLOW)and commit your changes in $(SOURCE_DIR)/$(NI-DRIVERS-BIN)$(TERM_NORMAL)"
 
 # -----------------------------------------------------------------------------
 
diff --git a/make/target-rootfs.mk b/make/target-rootfs.mk
index ca94b584..59eb92c5 100644
--- a/make/target-rootfs.mk
+++ b/make/target-rootfs.mk
@@ -151,37 +151,40 @@ endif
 
 # -----------------------------------------------------------------------------
 
+ifeq ($(BOXTYPE), $(filter $(BOXTYPE), coolstream))
+
 get-update-info: get-update-info-$(BOXSERIES)
 
 get-update-info-hd2:
 	$(call draw_line);
-	@echo "Get update info for model $(shell echo $(BOXMODEL) | sed 's/.*/\u&/')"
+	@echo "Get update info for boxmodel $(BOXMODEL)"
 	@echo
 	@$(CD) $(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR); \
-	test -e ./u-boot.bin && ( \
+	if [ -e vmlinux.ub.gz ]; then \
+		dd status=none if=vmlinux.ub.gz bs=1 skip=$$(LC_ALL=C grep -a -b -o $$'\x1f\x8b\x08\x00\x00\x00\x00\x00' vmlinux.ub.gz \
+		| cut -d ':' -f 1) | zcat -q | grep -a "Linux version"; \
+	fi; \
+	if [ -e u-boot.bin ]; then \
 		strings u-boot.bin | grep -m1 "U-Boot "; \
-	); \
-	test -e ./uldr.bin && ( \
+	fi; \
+	if [ -e uldr.bin ]; then \
 		strings uldr.bin | grep -m1 "Microloader "; \
-	); \
-	$(CD) $(TARGET_DIR)/var/update; \
-	test -e ./vmlinux.ub.gz && ( \
-		dd if=./vmlinux.ub.gz bs=1 skip=$$(LC_ALL=C grep -a -b -o $$'\x1f\x8b\x08\x00\x00\x00\x00\x00' ./vmlinux.ub.gz \
-		| cut -d ':' -f 1) | zcat | grep -a "Linux version"; \
-	);
+	fi
 	$(call draw_line);
 
 get-update-info-hd1:
 	$(call draw_line);
-	@echo "Get update info for model $(shell echo $(BOXMODEL) | sed 's/.*/\u&/')"
+	@echo "Get update info for boxmodel $(BOXMODEL)"
 	@echo
-	@$(CD) $(TARGET_DIR)/var/update; \
-	test -e ./zImage && ( \
-		dd if=./zImage bs=1 skip=$$(LC_ALL=C grep -a -b -o $$'\x1f\x8b\x08\x00\x00\x00\x00\x00' ./zImage \
-		| cut -d ':' -f 1) | zcat | grep -a "Linux version"; \
-	);
+	@$(CD) $(SOURCE_DIR)/$(NI-DRIVERS-BIN)/$(DRIVERS-BIN_DIR); \
+	if [ -e zImage ]; then \
+		dd if=zImage bs=1 skip=$$(LC_ALL=C grep -a -b -o $$'\x1f\x8b\x08\x00\x00\x00\x00\x00' zImage \
+		| cut -d ':' -f 1) | zcat -q | grep -a "Linux version"; \
+	fi
 	$(call draw_line);
 
+endif
+
 # -----------------------------------------------------------------------------
 
 PHONY += target-finish
diff --git a/skel-root/hd1/etc/init.d/stb_update.data b/skel-root/hd1/etc/init.d/stb_update.data
deleted file mode 100644
index 89ad08d2..00000000
--- a/skel-root/hd1/etc/init.d/stb_update.data
+++ /dev/null
@@ -1,2 +0,0 @@
-# get this info with "make get-update-info"
-V_KERNEL="Sat Jun 24 19:32:15 CEST 2017"
diff --git a/skel-root/hd1/etc/init.d/stb_update.sh b/skel-root/hd1/etc/init.d/stb_update.sh
index 79b774c3..93681312 100755
--- a/skel-root/hd1/etc/init.d/stb_update.sh
+++ b/skel-root/hd1/etc/init.d/stb_update.sh
@@ -4,8 +4,8 @@
 
 DO_REBOOT=0
 
-if [ -e /etc/init.d/stb_update.data ]; then
-	. /etc/init.d/stb_update.data 2> /dev/null
+if [ -e /var/update/stb_update.data ]; then
+	. /var/update/stb_update.data 2> /dev/null
 fi
 
 if [ -e /var/etc/.stb_update ]; then
diff --git a/skel-root/hd1/var/update/zImage b/skel-root/hd1/var/update/zImage
deleted file mode 100644
index d6721a1c..00000000
Binary files a/skel-root/hd1/var/update/zImage and /dev/null differ
diff --git a/skel-root/hd2-kronos/etc/init.d/stb_update.data b/skel-root/hd2-kronos/etc/init.d/stb_update.data
deleted file mode 100644
index 7570dcc1..00000000
--- a/skel-root/hd2-kronos/etc/init.d/stb_update.data
+++ /dev/null
@@ -1,2 +0,0 @@
-# get this info with "make get-update-info"
-V_KERNEL="Sun Nov 5 18:47:49 CET 2017"
diff --git a/skel-root/hd2-kronos/var/update/vmlinux.ub.gz b/skel-root/hd2-kronos/var/update/vmlinux.ub.gz
deleted file mode 100644
index 3b76bdf1..00000000
Binary files a/skel-root/hd2-kronos/var/update/vmlinux.ub.gz and /dev/null differ
diff --git a/skel-root/hd2/etc/init.d/stb_update.data b/skel-root/hd2/etc/init.d/stb_update.data
deleted file mode 100755
index 0dce2bee..00000000
--- a/skel-root/hd2/etc/init.d/stb_update.data
+++ /dev/null
@@ -1,2 +0,0 @@
-# get this info with "make get-update-info"
-V_KERNEL="Sun Nov 5 18:47:11 CET 2017"
diff --git a/skel-root/hd2/etc/init.d/stb_update.sh b/skel-root/hd2/etc/init.d/stb_update.sh
index 204494ad..d7599e21 100755
--- a/skel-root/hd2/etc/init.d/stb_update.sh
+++ b/skel-root/hd2/etc/init.d/stb_update.sh
@@ -4,16 +4,16 @@
 
 DO_REBOOT=0
 
-if [ -e /etc/init.d/stb_update.data ]; then
-	. /etc/init.d/stb_update.data 2> /dev/null
+if [ -e /var/update/stb_update.data ]; then
+	. /var/update/stb_update.data 2> /dev/null
 fi
 
 if [ -e /var/etc/.stb_update ]; then
 	rm /var/etc/.stb_update
 	# force an update with a bogus date
 	V_KERNEL="Sun Jan 1 00:00:00 CET 2042"
-	V_UBOOT="Sun Jan 01 2042  - 00:00:00"
-	V_ULDR="Sun Jan 01 2042 00:00:00"
+	#V_UBOOT="Sun Jan 01 2042  - 00:00:00"
+	#V_ULDR="Sun Jan 01 2042 00:00:00"
 fi
 
 if [ -f /var/update/vmlinux.ub.gz ]; then
diff --git a/skel-root/hd2/var/update/vmlinux.ub.gz b/skel-root/hd2/var/update/vmlinux.ub.gz
deleted file mode 100644
index 85181ffe..00000000
Binary files a/skel-root/hd2/var/update/vmlinux.ub.gz and /dev/null differ