diff --git a/README.md b/README.md
index d0e1320..74aaf4e 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,26 @@ fastboot delete-logical-partition product
 pmbootstrap flasher flash_rootfs
 ```
 
+## How to flash stock firmware
+
+It is recommended to flash stock firmware before doing anything.
+
+[Download Firmware](https://xmfirmwareupdater.com/miui/angelican/stable/V12.0.16.0.QCSMIXM/) and unpack it
+
+### Windows
+
+1. Download [MiFlashTool](https://cdn.alsgp0.fds.api.mi-img.com/micomm/MiFlash2020-3-14-0.rar)
+2. Unpack firmware.tgz to some folder and copy its path
+3. Launch MiFlash.exe and paste the path of firmware folder to that lonely input entry
+4. Click refresh, then flash button
+5. That's all, close the window
+
+### Linux/MacOS
+
+Install Windows and follow the guide above
+
+TODO: Write how to do that on linux
+
 ## How to unlock bootloader
 
 ### Drivers
@@ -62,7 +82,7 @@ Install usb drivers:
 - [https://mtkdriver.com/](mtkdriver.com)
 - [https://github.com/daynix/usbdk/releases](usbdk)
 
-#### Linux
+#### Linux/MacOS
 
 TODO: write about usb drivers, but they seem to be preinstalled
 
diff --git a/device-xiaomi-angelican/deviceinfo b/device-xiaomi-angelican/deviceinfo
index 28e6d13..dc27884 100644
--- a/device-xiaomi-angelican/deviceinfo
+++ b/device-xiaomi-angelican/deviceinfo
@@ -32,7 +32,7 @@ deviceinfo_flash_fastboot_partition_dtbo="dtbo"
 deviceinfo_generate_bootimg="true"
 deviceinfo_flash_fastboot_partition_rootfs="system"
 deviceinfo_flash_pagesize="2048"
-deviceinfo_header_version="3"
+deviceinfo_header_version="2"
 deviceinfo_append_dtb="false"
 deviceinfo_flash_offset_dtb="0x07808000"
 deviceinfo_flash_offset_base="0x40078000"
@@ -41,3 +41,4 @@ deviceinfo_flash_offset_ramdisk="0x11a88000"
 deviceinfo_flash_offset_second="0xbff88000"
 deviceinfo_flash_offset_tags="0x07808000"
 
+
diff --git a/prebuilt/install.sh b/prebuilt/install.sh
index 995d44f..a59ee34 100755
--- a/prebuilt/install.sh
+++ b/prebuilt/install.sh
@@ -5,7 +5,7 @@ fastboot flash vbmeta vbmeta_disabled.img
 fastboot flash vbmeta_system vbmeta_disabled.img
 fastboot flash vbmeta_vendor vbmeta_disabled.img
 fastboot flash boot boot.img
-fastboot flash dtbo dtbo.img
+# fastboot flash dtbo dtbo.img
 fastboot reboot fastboot
 fastboot delete-logical-partition product
 fastboot flash system system.img
diff --git a/prebuilt/system.img b/prebuilt/system.img
index a24b481..728d1b1 100644
--- a/prebuilt/system.img
+++ b/prebuilt/system.img
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:f269e20609a0dafe77c1f19f32d123f25c6e455b892125d886dfbad86ff2a6f5
-size 271122976
+oid sha256:39ad410299788402d8bb32d55bab4346a36f6640c1ac6726bf551bcc9bcbe231
+size 420478976