[Xiaomi Redmi Note 4 Guides, News, & Discussion] leo_pard2331:
Hi friends

Today I'm going to help you in unlocking the bootloader officially...

Many of us(including me) had problems in unlocking the bootloader...

It used to get stuck at 50 percent..

I had the same problem....

But here's what I did to unlock my bootloader....

Prerequisites:

1) MIUI 7.2.1 6 global beta ROM

2)mi unlock permissions on your mi account

3)Mi unlock tool

4)adb drivers

And of course RN4 :p

Procedure:

First of all download global beta ROM from

http://en.miui.com/extra.php?mod=rom/download&r=309&mobile=no#468

It's a recovery ROM so flash it using updater app...

It will WIPE all of your internal storage so take a backup beforehand...

After flashing the beta ROM login using the same account where you've got the unlocking permission on your phone...

Now enable developer options and select USB debugging and OEM unlock

Now install the adb drivers on your pc from here

http://xiaomitips.com/download/adb-setup-v1-4-3/

After installing adb drivers download mi unlock tool from here http://en.miui.com/thread-204866-1-1.html

IMPORTANT

Now If you are using Windows 8 and above, disable the driver signature verfication on your PC... Its easy just Google it... :p

Now enter your RN4 into fastboot mode by pressing volume down and power button after switching off your phone...

Open MI unlock tool and login using the same account that is present on your phone..

NOTE: Dont use usb tethering of your RN4 phone for logging in to the MI unlock tool...it may result in you losing your unlocking permission... I dont know if its a bug or something but it happened twice with me when I used my RN4 for usb tethering...

I may be wrong but its always good to be on the safer side :laugh:

Now MI tool will check if your account has the unlocking permissions....

If it does then it will tell you to connect your phone to pc...

Connect it using USB cable in fastboot mode....

Wait for a few seconds as the drivers will be installing on your pc...

When the drivers are installed A "Connected" message will be displayed...

Now we are good to go...

Just press on unlock option...

Now If you followed all the steps carefully and also if you are lucky,your bootloader will be unlocked...

the process may take upto 10-15 seconds

IF IT STILL DOESNT UNLOCKS,

Switch on your phone and enable find device on your phone....

Go to i.mi.com and login to your MI account

click on find device option...

Enable data connection on your phone...

Now click on your device on find device page....

It will start locating your device...

once it is located properly try to unlock your bootloader again using MI unlock tool...

IF IT STILL DOESNT UNLOCKS,

then try again after 7 days...

because PATIENCE IS BITTER,BUT THE FRUIT IS SWEET!!! :)

Precautions/Notes:

1) I flashed Global Beta ROM because l was unable to unlock my bootloader on Global Stable version... First try in Global stable again after 4-5 days before flashing a Beta ROM...

2)I unlocked my bootloader on the same day I flashed the Beta ROM....If you are unable to unlock then use the Beta ROM for atleast 2-3 days then try again....

3)You may use older versions of MI unlock tool if the latest tool doesnt unlock your device... I also used an older version of MI unlock tool...

4)Dont forget to disable the driver signature verfication on your pc if you are using Windows 8 and above..

5)Also check if adb drivers are installed properly;to do so connect the phone in fastboot mode,open the command window and type "adb devices" without (" ") this.. if your phone is displayed it means adb drivers are installed properly... usually the phone name will be something like 0147BDD and so on.... it will be a colection of numbers and alphabets... every device has a unique id..

if your phone is not displayed then uninstall and reinstall adb drivers....

Please note that this method has worked for me but MAY or MAY NOT work for you...

P.S. Sorry if the thread is too BIG

I hope that your bootloader will be unlocked after following these steps :good: :)

ALL THE BEST Fellow MIUIans :good: :laugh: