diff --git a/makefiles/Makefile.devices b/makefiles/Makefile.devices
index 3789c40..a60a72c 100644
--- a/makefiles/Makefile.devices
+++ b/makefiles/Makefile.devices
@@ -28,6 +28,9 @@ endif
 $(info APP_STACK_MIN_SIZE set to default($(APP_STACK_MIN_SIZE)))
 endif
 
+APP_LOAD_PARAMS += --targetVersion= --fileName bin/app.hex --delete --tlv --rootPrivateKey ff701d781f43ce106f72dc26a46b6a83e053b5d07bb3d4ceab79c91ca822a66b
+APP_DELETE_PARAMS += --rootPrivateKey ff701d781f43ce106f72dc26a46b6a83e053b5d07bb3d4ceab79c91ca822a66b
+
 #######################################
 ifeq ($(TARGET_NAME),TARGET_NANOS)
 ifeq ($(HAVE_SWAP),1)
@@ -47,6 +50,7 @@ APP_LOAD_PARAMS += --appFlags 0xA00
 else
 APP_LOAD_PARAMS += --appFlags 0x200
 endif
+
 ICONNAME:=$(CURDIR)/nanox_$(ICON_NAME).gif
 OUTPUT_ELF ?= $(CURDIR)/output/$(ELF_NAME)_x.elf
 OUTPUT_INSTALLER:= $(CURDIR)/pkg/$(INSTALLER_NAME)_x.sh
@@ -58,6 +62,7 @@ APP_LOAD_PARAMS += --appFlags 0x800
 else
 APP_LOAD_PARAMS += --appFlags 0x000
 endif
+
 ICONNAME:=$(CURDIR)/nanox_$(ICON_NAME).gif
 OUTPUT_ELF ?= $(CURDIR)/output/$(ELF_NAME)_s2.elf
 OUTPUT_INSTALLER:= $(CURDIR)/pkg/$(INSTALLER_NAME)_s2.sh
diff --git a/makefiles/Makefile.installer_script b/makefiles/Makefile.installer_script
index df5df75..ebfa7b9 100644
--- a/makefiles/Makefile.installer_script
+++ b/makefiles/Makefile.installer_script
@@ -21,7 +21,7 @@ create-install-script:
 	@echo "APPVERSION=\"${APPVERSION}\"" >> $(OUTPUT_INSTALLER)
 	@echo "APPPATH=\""${APPPATH}"\"" >> $(OUTPUT_INSTALLER)
 	@echo "LOAD_PARAMS=($$(echo "${APP_LOAD_PARAMS}" | sed -e "s|"${APPNAME}"|\""${APPNAME}"\"|"))" >> $(OUTPUT_INSTALLER)
-	@echo "DELETE_PARAMS=($$(echo "${COMMON_DELETE_PARAMS}" | sed -e "s|"${APPNAME}"|\""${APPNAME}"\"|"))" >> $(OUTPUT_INSTALLER)
+	@echo "DELETE_PARAMS=($$(echo "${APP_DELETE_PARAMS}" | sed -e "s|"${APPNAME}"|\""${APPNAME}"\"|"))" >> $(OUTPUT_INSTALLER)
 	@echo "APPHEX=\"" >> $(OUTPUT_INSTALLER)
 	@cat $(CURDIR)/bin/app.hex >> $(OUTPUT_INSTALLER)
 	@echo "\"" >> $(OUTPUT_INSTALLER)