How To Flash & Unbrick Xiaomi Phone [Tutorial]

Greetings MIUI Lovers and Xiaomi Users,

Note: It has been reported that beyond MIUI V8.1, Developers has removed Download Mode (EDL), please try it at your own risk.

Steps for Flashing/Unbrick Redmi 4/Prime/4A: (This can be used to flash from China Rom to Global Rom, or Tampered Rom to Original Rom)

Please be noted I will not take any responsibility for anything happened to your device. Use Windows 64-Bit, users having issue on 32-Bit Windows. You may face this error " Not enough storage to process this command"

Important: - Before flashing it is advised to take the backup of data and make sure that your phone battery is charged enough.

You need to Start your Phone in Download Mode.(Not Fastboot Mode)

Do The Following.

1. Go to the Recovery Mode by Volume Up and Power button.
2. Click Download from Screen
3. Plug USB Cable to PC

4. PC will install the device driver, let it do its job

On your PC do these next steps:

1. Open Device Manager and Phone will be detected as QHUSB_BULK under the Com Ports section.

Right Click and choose Update Drivers.

Note : - Driver Signature Enforcement: It's recommended to disable. Reboot your PC in Advanced Mode and Choose Disable Driver Signature.

Follow this thread Disable Driver Signature Enforcement in Windows 7/8/10 64-Bit

2. Choose Browse My Computer for Driver Software

3. Choose the Path of Xiaomi Folder. Most of users will find it like this.
Note:- If Folder does not exist , Install MI Flash (Link below) first.

Win 64 bit C: \ Program Files (x86) \ Xiaomi \ MiPhone \ Qualcomm \ Driver

Win 32 bit C: \ Program Files \ Xiaomi \ MiPhone \ Qualcomm \ Driver

4. Choose Install this Driver Software anyway.

5. Wait till driver installation successful.

6. The driver will be installed Sucessfully and you can see added in Ports as Qualcomm HS-USB.

Now we are ready to Flash!

Flashing ROM Part.Windows 64-Bit recommended as users are facing issues on 32-Bit and brick thier devices.

The ROM links below are of Fastboot Rom. Recovery ROM will not work.If you have already downloaded Fastboot ROM no need to Download again.

(File Extension with .Zip file is Recovery ROM, .tgz or .tar file is Fastboot ROM)

you can choose your Fastboot rom here:

Fastboot Rom Download Link

If link does not work, Put Letter "o" not Zero before the Link address.

Flash Tool:  Download Here

Important: - Before flashing it is advised to take the backup of data and make sure that your phone battery is charged enough.

Steps to Flash ROM: -

1. Download ROM from the above link (Which one you want to Flash) and extract it to Desktop(Use Winrar Software to extract).

(Please check if the file suffix is '.tgz'. Please rename it to '.tgz' if the suffix is '.gz or .tar')

Note: - Some users get error while extracting on Desktop Because there is space in the username of PC or the folder as shown.

The users should put the ROM In C Drive in a folder without spaces. E,g C:/ROM/MIUI

2. Download flashing tool from the above link and install it.

3. Once installation is complete, Run MiFlash application

4. Click on browse

5. Select ROM folder from Desktop(From the location where ROM is saved)

Note: -The path of the ROM folder Should be like "C:\\MIUI" Not "C:\MIUI\images"

The MIUI Rom folder should Contain the following files

6. Press Refresh button to see you device in flashing tool.

After pressing refresh button you will see connected device (COM 5) in my PC

Choose Flash_all option.

8. Click on Flash and it will start process

9. Once flashing process completes

Remove the cable and keep Power Button pressed until it Vibrates.
The Device will start, wait till completion , it can take up to 10 Minutes.

Note:
from _Xan_

Please mention in your tutorial if you are logged in Mi Account until upgrade is need to log out because in Mi Flash will handle exception: 
[0.18  COM10]:[COM10]:start flash.
[2.22  COM10]:cannot receive hello packet,MiFlash is trying to reset status!
[4.74  COM10]:cannot receive hello packet,MiFlash is trying to reset status!
[7.26  COM10]:try to reset status.
[8.41  COM10]:write time out try agian 96
[9.92  COM10]:write time out try agian 97
[11.43  COM10]:write time out try agian 98
[12.94  COM10]:write time out try agian 99
[14.44  COM10]:write time out try agian 100
[15.24  COM10]:error:The write timed out.
[15.25  COM10]:error:The write timed out.


Thanks for the input

Source : Xiaomi Forum