diff --git a/src/platforms/px4_micro_hal.h b/src/platforms/px4_micro_hal.h
index dbfdf5e255..62b8b9261e 100644
--- a/src/platforms/px4_micro_hal.h
+++ b/src/platforms/px4_micro_hal.h
@@ -70,6 +70,10 @@ __BEGIN_DECLS
 #    if defined(CONFIG_ARCH_CHIP_STM32F7)
 #      define PX4_SOC_ARCH_ID             PX4_SOC_ARCH_ID_STM32F7
 #      include <chip.h>
+#      include <chip/stm32_flash.h>
+void stm32_flash_lock(void);
+void stm32_flash_unlock(void);
+int stm32_flash_writeprotect(size_t page, bool enabled);
 #      include <up_internal.h> //include up_systemreset() which is included on stm32.h
 #      include <stm32_bbsram.h>
 #      define PX4_BBSRAM_SIZE STM32F7_BBSRAM_SIZE
diff --git a/src/systemcmds/bl_update/bl_update.c b/src/systemcmds/bl_update/bl_update.c
index 9dab870dac..aa125ee5d4 100644
--- a/src/systemcmds/bl_update/bl_update.c
+++ b/src/systemcmds/bl_update/bl_update.c
@@ -34,7 +34,7 @@
 /**
  * @file bl_update.c
  *
- * STM32F4 bootloader update tool.
+ * STM32F4 & STM32F7 bootloader update tool.
  */
 
 #include <px4_config.h>
@@ -58,7 +58,7 @@
 
 __EXPORT int bl_update_main(int argc, char *argv[]);
 
-#if defined (CONFIG_STM32_STM32F4XXX)
+#if defined (CONFIG_STM32_STM32F4XXX) || defined (CONFIG_ARCH_CHIP_STM32F7)
 static int setopt(void);
 
 static void print_usage(const char *reason)
@@ -75,12 +75,13 @@ static void print_usage(const char *reason)
 	PRINT_MODULE_USAGE_COMMAND_DESCR("<file>", "Bootloader bin file");
 }
 
-#endif
+#endif // defined (CONFIG_STM32_STM32F4XXX) || defined (CONFIG_ARCH_CHIP_STM32F7)
+
 
 int
 bl_update_main(int argc, char *argv[])
 {
-#if !defined (CONFIG_STM32_STM32F4XXX)
+#if !(defined (CONFIG_STM32_STM32F4XXX) || defined (CONFIG_ARCH_CHIP_STM32F7))
 	PX4_ERR("Not supported on this HW");
 	return 1;
 }
@@ -242,4 +243,4 @@ setopt(void)
 	PX4_ERR("option bits setting failed; readback 0x%04" PRIx32, *optcr);
 	return 1;
 }
-#endif // CONFIG_STM32_STM32F4XXX
+#endif // defined (CONFIG_STM32_STM32F4XXX) || defined (CONFIG_ARCH_CHIP_STM32F7)