diff --git a/firmware/.gitignore b/firmware/.gitignore
index 3167e5acaf..7827f12ed2 100644
--- a/firmware/.gitignore
+++ b/firmware/.gitignore
@@ -1,3 +1,4 @@
 openocd
 benchmark.txt
 gen_*.log
+deliver/
diff --git a/firmware/controllers/engine_controller.cpp b/firmware/controllers/engine_controller.cpp
index 56daef4539..851166209f 100644
--- a/firmware/controllers/engine_controller.cpp
+++ b/firmware/controllers/engine_controller.cpp
@@ -812,6 +812,6 @@ int getRusEfiVersion(void) {
 	if (initBootloader() != 0)
 		return 123;
 #endif /* EFI_BOOTLOADER_INCLUDE_CODE */
-	return 20190803;
+	return 20190804;
 }
 #endif /* EFI_UNIT_TEST */
diff --git a/firmware/hw_layer/ports/stm32/stm32f7/dfu_init.h b/firmware/hw_layer/ports/stm32/stm32f7/dfu_init.h
index a4fff2f71c..549d001b34 100644
--- a/firmware/hw_layer/ports/stm32/stm32f7/dfu_init.h
+++ b/firmware/hw_layer/ports/stm32/stm32f7/dfu_init.h
@@ -8,8 +8,10 @@
 #ifndef HW_LAYER_PORTS_STM32_STM32F7_DFU_INIT_H_
 #define HW_LAYER_PORTS_STM32_STM32F7_DFU_INIT_H_
 
+// looks like this is System Control Block Base Address
 LDR R1, =0xE000ED00
 LDR R0, =0x1FF00000
+// so this must be Vector Table Offset Register?
 STR R0, [R1, #8]
 LDR SP, [R0, #0]
 LDR R0, [R0, #4]
diff --git a/firmware/hw_layer/ports/stm32/stm32h7/dfu_init.h b/firmware/hw_layer/ports/stm32/stm32h7/dfu_init.h
new file mode 100644
index 0000000000..3a1065336c
--- /dev/null
+++ b/firmware/hw_layer/ports/stm32/stm32h7/dfu_init.h
@@ -0,0 +1,3 @@
+
+// https://community.st.com/s/question/0D50X00009bNBluSAG/boot-stm32h7-after-power-up
+// https://community.st.com/s/article/STM32H7-bootloader-jump-from-application
diff --git a/firmware/svnversion.h b/firmware/svnversion.h
index dad6699e3d..274618a685 100644
--- a/firmware/svnversion.h
+++ b/firmware/svnversion.h
@@ -1,12 +1,12 @@
 // This file was generated by Version2Header
-// Sat Aug 03 20:42:36 EDT 2019
+// Sun Aug 04 00:11:03 EDT 2019
 
 
 #ifndef GIT_HASH
-#define GIT_HASH "33a488aa5498ab79728f573a977237a60e401976"
+#define GIT_HASH "508d497db19eda37c58b568670799f663fe8695e"
 #endif
 
 
 #ifndef VCS_VERSION
-#define VCS_VERSION "19645"
+#define VCS_VERSION "19649"
 #endif