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Guide to unlocking bootloader in Xiaomi MIUI

Marco Rossano

January 30 2018

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If you own a Xiaomi device, you will surely be confronted with this relatively new "problematic" introduced by the Chinese company for about a year: it is not possible to change the ROM as you would on old smartphones.

Getting started about unlocking the bootloader

Before proceeding with the proper guide, it is essential that you receive some information:

We initiate Chrome from PC. It is advisable to use this browser because it has the integrated ability to translate web pages and ... with the Chinese we will need it!

Let's go to the official site en.miui.com and sign up for your Xiaomi account.
If you do not have it, create it as a new one and use the confirmation number for the phone number you want the SMS to receive.

READ MORE - especially if you already had an account Xiaomi, join your profile en.miui.com, clicking on your name in the top right. Let's go to the section "update profile"And from there on the card titled"Password". You have to complete the security check-up up to the total completion (100%) by entering the number on which you receive the SMS authorization as the retrieval phone number.

After completing the profile on the official site, you have to go on MiCloud site and log in with the account created previously.

Now you could find it in front of you two situations: If you have never entered before i.mi.com, click on "Sign in"Top and - here too - you will need to complete yours safety profile proceeding with SMS verification just like it did before; if you already had the Xiaomi account, you just have to click on the dart next to your name top right and then on "account"And repeat the steps on en.miui.com, or click on the tab Security and complete the profile at 100%.

We can proceed with the real request.

Come on en.miui.com and we verify that we are logged in. In the upper right, your nickname must appear and not sign in.

Click on "Unlock"And most likely there will be a page where you will need to log in with the mail used when registering on en.miui.com.
As soon as you log in, we will be able to translate the page and we will begin to complete the fields for the request as follows:

At this point check your phone for an SMS with a code to be placed on the page that will open.

Enter the code, the procedure is over and you just have to WAIT.

And if the procedure returned a blacklist IP error?

Unfortunately lately, it is often the fault of Xiaomi's Chinese servers. You will need to use a Chinese Proxy server to connect to the Internet and repeat the procedure.
Let's briefly see how to set up a Proxy server.

Use Firefox possibly (and not Chrome) for this procedure and to repeat the procedure because it has the built-in Proxy settings.

Connect to the site: https://www.proxynova.com/proxy-server-list/country-cn/ and you will find a list of Chinese Proxy Servers.

You have to try somebody who has a good speed (otherwise you lose too much time!) And not anonymous. Copy the Proxy IP and Proxy Port in the Firefox settings as follows.

Click on the three lines in the upper right and Firefox menu will open. Select the tab Advanced and from there Network. Then in the window that opens there, select "Proxy Manually Configure" and write the IP and proxy port to use. Then, do OK and repeat the message request procedure (2 point).

You have received the message. Great!

Then from the PC we connect on en.miui.com/unlock and we can download the tool which will serve us to unlock the bootloader.

Downloaded MiUnlockTool we can go ahead with the procedure.

First, make sure you have the official ROM (do not try to unlock it by having a very good ROM because you will have very little chance of success). If you do not, you can follow these guides to recognize and replace your chunky ROM:

Recognize a flatter ROM

RedMi 4 Prime Fixing Replacement ROM Replacing Mi5S Plus Loop ROM Replacing ROM Mixton Mi5S  Replacing ROM Mixton Mi5

Verified to have one Official ROM, we access the MiAccount from the phone: go to My Account settings and sign in to the account you created and which was authorized by Xiaomi to unlock.

From settings, then, we go to MiAccount, enter MiCloud and activate the "Find device".

From the PC we go up i.mi.com and we sign up with the Xiaomi account.
If a "Sign in“, Click on it and complete your security profile by proceeding with the verification via SMS exactly as you did previously; if, on the other hand, you are logged in, click on the arrow next to your name at the top right and then on “account” and complete the Security profile at 100%.

Once this is done, check that the top "1 connected".

We click on 1 connected and verify that the phone connected to MiCloud is the one to unlock.

Let's take the phone now and let us know opzioni sviluppatore (7 click on MIUI version from device info), we enter the developer options (we find it in additional settings) and click on "Unlock Status"And at the bottom we click on the one button: this will automatically make the phone-account association and we will not have any problems.

Now everything is set up and ready!

Let's put the phone in fastboot mode (power and volume down), connect it to the PC and start the unlocking tool of the bootloader.

Let's get in with ours Xiaomi account and we expect the authorization verification to be completed.

At this point we click on UNLOCK and we expect the procedure to be completed.

You have unlocked your Xiaomi bootloader!

In the event of errors, you will almost certainly be in a driver issue on your PC. Then follow these steps and then try to unlock the Xiaomi tool.

We disable driver signatures on the PC

• from the phone, go to settings -> device information and click 7 times on MIUI Version: in this way we will become developers
• always from the phone, now, let's go back to settings -> additional settings (the second item, not the one under "hotspot" but the one immediately following "memory") -> developer options and activate the Debug USB

Now let's turn off signatures on your PC.

• (if you have Windows 10 follow these steps and then proceed to the next step)notifications icon bottom right, click on all settings, then up upgrade and security, select the card for developers and choose the developer mode
• (if you have Windows 8.1 follow from here - if you have Windows 10 continue with this point) restart by holding down the SHIFT key and, when restarting, we will enter the TROUBLESHOOTING menu and then in ADVANCED OPTIONS

• then click on START SETTINGS and then on RIAVVIA. When you reboot, you will be presented with one list like this below and you will have to click F7 for disable driver signatures. The PC will restart automatically
  

We install the adb and fastboot drivers on the PC

We just restarted the PC, then download the following files:

now connect the phone to the PC and verify that it is connected in MTP mode (lower the notification curve and, if connected in "charging" mode, change it to MTP). At this point on your phone you will see a message asking you to allow USB debugging from your PC: before agreeing to it, we will post the box "always allow debugging USB from this computer"And then we give our consent.

Now let's start the driver driver installation tool (right click + start as administrator) and click on install as shown below:

At the end we install MiFlash and when prompted to install the drivers with a warning, we consent to the installation of the drivers. The message will be repeated 5 times higher and we confirm it all the time.

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