[Other] Bootloader Unlocking Tutorial & Unlocking Tool (Updated - 6th December 2017)

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Hi Mi-Fans,Xiaomi have locked bootloader for for all of the devices in order to protect user data safety i.e to protect users to getting the counterfitted devices or ROM.Changes that occur after locking bootloader:Locking bootloader will not affect normal OTA updatesROOT will be disabled if it was enabled before. Recovery mode is changed. Updating via Recovery will need to use Mi PC SuiteDevices with locked bootloader can not update using Miflash. Users need to unlock bootloader if they want to flash Fastboot ROMs.Locking bootloader is aimed to provide better user experience, which xiaomi have been trying to do the whole time. In the meantime, we've provided a unlocking tool for senior users who know their ways around flashing and tweaking their devices. The unlocking process is really simple. After unlocking, the device can do all the things as before we locked bootloader. The unlocking procedure will need Internet access to get the unlocking password. Also, the Mi Account logged in on the Mi phone and the unlocking tool needs to be the same. Otherwise the unlocking request will be denied. This will ensure that ill-intentioned people will not get access to your personal data.Risks of unlocking Mi Devices? By unlocking the device you agree that this may bring changes to some parts of the system. These changes may damage the device. After the device is unlocked, it becomes less secure and more vulnerable to malware attacks, which may lead to the disclosure and loss of your private data. Some features which require high security level (e.g., Find device,banking apps, added-value services, etc.) will no longer be available.Important:The risks stated above do not fully cover changes which may be brought about by Mi Unlock.We will keep improving Mi Unlock in order to prevent the cases when unauthorised vendors unlock Mi devices to install third party apps which worsen MIUI user experience and cannot to be deleted. Locked devices also provide you with high-quality security features, such as Find device, and other added-value services. We're sorry for any inconveniences our policies may cause. Please think twice before unlocking if you are not familiar with ROM flashing. Unlocking TutorialOpen http://en.miui.com/unlock and apply for getting bootloader unlocking permissions. You will get the page showing application form like belowAfter applying for bootloader unlocking permissions please wait for few days for getting approval message If you haven't get any info after 10-12 days then please open the page again to see weather your aplication is approved or not. Important: State Your Unlocking Reason - Please provide the real reasons why you want to unlock your phone in English only. Copied reasons from other tutorials might cause your unlock application to be rejected . You must be on Developer ROM to unlock your device. If you're on MIUI Global Stable then please download MIUI Global Developer ROM. Download recovery file of Official MIUI Global Developer ROM for your device. Go to Updater app, press the three dot on upper right corner, and select 'Choose update package'. Choose the zip file you just put in phone storage. The update will wipe all user data, do remember to take a backup of the data .Login into the Mi account which has acquired unlocking permission on your deviceTurn off your device, press the Power button and Volume down button at the same time to enter bootloader modeLogin into the unlocking tool on PC with the same Mi account then Connect the device with the PC using USB cablePress 'Unlock'. The unlocking process will complete in about 5-10 secondsNote: After unlocking bootloader, you will be able to flash fastboot ROMs and custom ROMs. The unlocked device will be marked in the official service end. You could lock bootloader again by flashing official MIUI ROMs. (This will need to use fastboot oem lock. Please note to flash offcial MIUI ROMs, otherwise your system won't be able to start)Known Issues faced by users : Stuck at 50%this is the most common error faced by users, that while unlocking the process stops at 50% giving the error that your account at the device and Mi unlock tool is different.Solution :if you are getting the same error then we request you to wait for 10 days more as your account details for unlocking might not be updated at the server end. Try after 10 days if still you are getting the error you can post a thread mentioning the following detailsMi Account UID:MIUI version:Your device:Screenshot of the unlocking page statusDays of application:USB device problemFor those who received permission to unlock but still stuck, please check out this section. You might be facing problem due to USB problem especially for those who are using Windows 10 which causes your PC fail to detect device in fastboot mode. Download Mi Flash tool. Boot into fastboot mode (Hold Volume Down+Power),Mi bunny image will be shown. Then Plug device into the computer.Open Device Manager and search for USB Device(Kedacom) Uninstall itUnplug your device and reconnect it againyou will see that driver is reinstalling and show Android Device as Android Bootloader Interface, once the driver finished updating it will revert back to Kedacom. Then perform fllowingDouble click on Android Bootloader Interface again under Kedacom againUnder Driver' tab, click on Roll Back Driver, once completed press OKSince the driver is all right now, you can open Mi Unlock Tool and you should be able to unlock without problem nowNote:It's possible that you might not receive the SMS regarding unlock permission. You can visit http://en.miui.com/unlock/ and click on Apply button again and it will show you the status of your application. If you see the link to download the Unlock tool that means you already have been granted the permission to unlock your device. Just download the tool and follow the instructions.After getting unlocking permission for a Mi account, please wait for 7-10 days before unlocking the bootloader. One Mi account could only unlock one device within 30 daysIf your device is encrypted, unlocking bootloader will wipe all user data. Please perform a backup beforehand. If your application has been rejected or as we seen in few cases that users having prior unlocking permissions are getting cancelled, please try to apply again later. And please input the real reason that you want to unlock your device in English. Don't copy and paste others' unlocking reasons.After getting the approval SMS perform following steps:Go to Settings -- About Phone -- Tap on MIUI Version 5-7 times to enable the developer option).Then, go to Settings -- Additional settings -- Developer option and bind your Mi account under Mi Unlock Status. Log into the Mi account which has acquired unlocking permission on your deviceGo to Settings -- Mi Account -- Account security -- Devices -- Other devices and remove all other devices associated with your Mi Account.Go to Settings -- Additional settings -- Developer options -- Enable USB debugging and OEM unlocking.Mi Unlock Tool:you can download the Mi Unlock Tool From belowMI Unlock Tool Latest-  ---updated/New Flash Tool

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