How to unbrick Xiaomi Mi4 from MIUI Marshmallow/Windows 10 update failure

Xiaomi already rolled out Android 6.0 Marshmallow update to Mi4 flagship smartphone just a couple of months ago. Many of you might have successfully installed the Google latest Operating System while few of them might have bricked their Mi4 by not following the update process properly. Few of the Mi4 users have flashed leaked versions of Marshmallow beta which ended up with a brick.

So, here we have a simple tutorial to unbrick Xiaomi Mi4 by flashing stock firmware using the MiFlash tool. The below tutorial also works to fix a brick issue caused due to flashing Windows 10 ROM which was released together by Xiaomi and Microsoft.

Prerequisites:

Download and install the latest version of MiFlash tool on your PC.
In both cases, you need to flash Mi4 Fastboot ROM. Download the latest version from HERE.
Make sure you have enough battery level on your device before starting the process.
For brick caused by new partition layout, you’ll need one of this MiFlash script
Install USB Drivers on your Windows PC.
Enable developers options on your Mi device.

Unbrick Mi4 from MIUI Marshmallow improper update

Step 1: Launch the MiFlash tool and connect the device with PC using a USB cable.

Step 2: Now you need to enter into Fastboot mode by pressing and holding “power + volume down buttons” simultaneously. Don’t release the “volume down” button until you see fastboot screen.

Step 3: Once entered into Fastboot mode, just press the “Refresh” button on the MiFlash tool.

Step 4: Your device will be listed in the tool indicating a successful connection between your Mi4 and PC.

Step 5: Now extract the file’s contents of Mi4 fastboot rom with the help of Winrar application.

Step 6: Once the rom is extracted, you need to replace one of its flashing script (.bat for windows) with the one you downloaded from the above prerequisites. By doing this, your device will be revert to the KitKat partition layout (unmerged).

flash_all.bat : erase all your phone storage, even your data stored on internal storage like pictures, music and so on
flash_all_except_storage.bat : I would recommend it as it just wipes you app and system partition, you’ll lose call history, messages, apps and so on but you keep your data
flash_all_except_data_and_storage.bat : don’t use it, as you’ll downgrade your android version it would lead to app force close

Step 7: Everything perfect to start the flashing process. Go to the MiFlash tool and press on ‘Browse’. Here you need to select the fastboot rom folder.

Step 8: Then you need to select one of the script: flash_all or flash_all_except_storage

Step 9: Now press the ‘Flash’ button and wait for a while till the ROM is flashed on your Xiaomi Mi4. Once completed, your device reboots into normal mode.

Step 10: There you go! You have successfully unbricked your Mi4 smartphone.