Steps to unlock bootloader on Xiaomi Qin 2 Pro

Step 1: Enable The Developer Option and OEM Unlock

To enter the process of unlocking, you are required to enable the developer option first and then OEM unlock.

• Go to Settings » About phone » MIUI version.
• Tap repeatedly on the MIUI version until you see the pop-up You are now a developer!

• Go back to Settings, click on Additional settings, then Developer options.
• Enable OEM unlocking and USB debugging.
• Bind your Xiaomi account to your Xiaomi Qin 2 Pro. Tap Mi Unlock status » Agree » Add account and device. Make sure your device can connect to the internet using mobile data.

• Once the account is successfully bound, you should get a message Added successfully. Mi account is associated with this device now.
• Now turn off your phone, press and hold the Volume Down key and the Power button to enter Fastboot mode.
• Connect your phone to PC using USB cable.
• Download and launch the Mi Unlock on your PC and sign in to your Xiaomi account (Email/Phone/Xiaomi Account and Password). Make sure your phone is in Fastboot mode and connected to PC.

• The server will check whether the Xiaomi account is bound to your phone or not.
• You have already done that on the phone, so you should get Phone connected message on Mi Unlock. If you get Not connected to the phone message, reinstall Mi USB driver and try again.
• Click on Unlock » Unlock anyway. On your first attempt, Mi Unlock will flash the message Couldn’t unlock. Please unlock 168 hours later. Follow the timer / waiting period to unlock successfully.

• Once the bootloader is unlocked, your phone should reboot automatically. If it doesn't, click on Reboot phone.

• Congrats, you have successfully unlocked the bootloader on the Xiaomi Qin 2 Pro.

Other method

Step 1: Enable The Developer Option and OEM Unlock

To enter the process of unlocking, you are required to enable the developer option first and then USB Debugging and OEM unlock.

• Go to settings on your phone.
• Locate the About Phone - Build number and then tap on it several times until the Developer option get enabled.
• Get back to the main Settings and then tap on Additional Settings (or System) - Developer Option.
• In Additional Settings, just tap on USB Debugging and OEM Unlock.

Step 2: Unlocking Bootloader on Xiaomi Qin 2 Pro

• Connect Phone to PC and Verify the connection

• Open the folder where ADB and Fastboot are kept. Open "cmd-here.exe" or open the Command Prompt in the folder by clicking Swift key + right mouse click on an empty space.
• Boot Xiaomi Qin 2 Pro into Fastboot mode, type the following command:

• adb devices
• adb reboot bootloader
• Your phone will boot into bootloader and also you will also see bootloader locked.
• To ensure the drivers are installed properly, type the following command:
• fastboot devices
• fastboot oem get_identifier_token
• You should get an output like Identifier token:
XXXXXXXXXXXXXXXXXXXXXXXX
OKAY [ 0.019s]
finished. total time: 0.019s

• Copy out the Identifier token
• Run this command ; replace XXXXXXXXXXXXXXXXXXXXXXXX with your Identifier token
• ./signidentifier_unlockbootloader.sh XXXXXXXXXXXXXXXXXXXXXXXX signature.bin
• You will now get an output along the following line
Identifier sign script, ver 0.10
1+0 records in
1+0 records out
60 bytes copied, 0.000376481 s, 207 kB/s
Identifier sign successfully

• You should also see a signature.bin file in the modified_fastboot folder
• Finally, run this command
• ./fastboot flashing unlock_bootloader signature.bin
• You should get a prompt on the device asking you to push a volume button to confirm unlock
• The phone will unlock, and all data will be wiped!
• Once you have done, you can reboot your device using the command:
• fastboot reboot
• Finally, you have successfully unlocked the bootloader on the Xiaomi Qin 2 Pro.