On Xiaomi’s phones, they use MIUI, a modified version of Android. They have come up with two different variants of MIUI for the Chinese market and the Chinese market. One is “China ROM” without Google service and the other is “Global ROM” with Google service.

They have developed Global ROM in such a way that people who do not know Chinese outside of China can use it very easily. So it is more convenient to use Global ROM in our country or any country outside China. Learn more about the advantages and disadvantages of Global and China ROM This article Can fall.

Usually if you buy a phone of the same model from China you will find it with China ROM installed. On the other hand, if you buy from Shaomi’s official distributors in Bangladesh, you will get Global ROM installed. Xiaomi usually launches a new phone first in China. Besides, due to the low price of Xiaomi phones in China, many shopkeepers in Bangladesh bring phones directly from China and sell them. Naturally, China ROM is installed in those phones.

Although there is no big difference between China ROM and Global ROM except Google service, many customers still feel more comfortable with Global ROM. If you want, you can follow this tutorial and install Global ROM on phones with China ROM. Similarly, it is possible to go to China ROM from Global ROM.

Caution This tutorial is for those who have a basic idea about phone development. This type of ROM change can cause your phone to become hardbroken or dead, which can no longer be fixed. So follow this tutorial and change the ROM on your phone at your own risk. Following this tutorial, the author or technician will not be held responsible for any damage to the phone.

Be sure to back up all your phone data before starting the whole process. Because all your data will be deleted in the process.

Step 1 – Unlock the bootloader

Your phone is run by an operating system called Android. And as soon as the power button is turned on, the operating system launches a small software called bootloader. It’s a lot like the “main gate” of a phone. Phone companies usually lock the bootloader so that ordinary users do not damage the phone by installing the wrong ROM.

However, those who want to change the ROM of a slightly advanced level user and phone can do so by unlocking the bootloader.

To unlock the bootloader on Xiaomi’s phone, you need to apply online on Shaomi’s website. An application is not a written application or something like that.

• First, login to your phone with your me account (if you haven’t already).
• Now go to About Phone or My Device option from phone settings. Here you will tap 6 times to write MIUI Version or Bulid Number. Now the developer option has been enabled on your phone.

• Now you will get an additional option called Developer Options by going to the Additional Settings option from the phone settings again. Go inside and turn on OEM Unlocking and USB Debugging.
• Now go to Mi Unlock Status and you will see the following screen. Read the warning and click on the Add Account option. As I said before in this step but your phone must have good speed internet connection. And after unlocking the bootloader, you will no longer get Shaomi’s default Find My Device feature.
• Then from your Windows PC en.miui.com/unlock Visit the site and install the software called Mi Unlock Tool on your PC.
• Now turn on the internet connection of the PC, enter the unlock tool and login with your me account. (Login with me account on the phone.)
• Now switch off your phone. Then press and hold the Power and Volume Down buttons together for 10 seconds. You will see that your phone is launched in a mode called fastboot.

• Now connect your phone to PC with USB cable. ADB driver will be installed. If not, you have to do it manually.

• Now press the unlock button on the m unlock tool and the unlocking process will start. The unlocking process may take some time to unlock. No problem, you can turn on your phone and run normally. Don’t just remove the mI account from the phone.

After successfully unlocking your phone, when you turn on the phone, you will see an open lock mark and “Unlocked” text at the bottom of the Shaomi’s logo. This means that your phone’s bootloader has been successfully unlocked. The whole process may not be so simple for everyone. In that case you can try again.

Step 2 – ROM flash

Since your phone’s bootloader has been unlocked, you can now install any MIUI ROM on your phone. Global ROM, China ROM or Developer ROM. But if you want to install any other custom ROM then you need to install custom recovery. It is better not to go there for now.

• First of all This link Install the tool called Mi Flash Tool on your PC.
• Now find and download the “fastboot version” of the desired ROM for your phone from the MIUI forum. On this site You will get fastboot version of Global ROM for almost all Xiaomi phones. If you want to go to Global, download Global Fastboot ROM and if you want to go to China, download China Fastboot ROM.
• Fastboot ROMs will usually be downloaded in .tgz format. Decompress it and put it in any folder. In case of ROM download, you must download the latest ROM. If you install an earlier version of ROM on your phone, your phone may become hard bricked or dead due to Shaomi’s antirolback policy.
• Now open the m flash tool. Select the “Clean All” option at the very bottom of the tool’s homepage. However, do not forget to select the “Clean All and Lock” option. Now connect your phone to the PC with the USB cable and enter the fastboot mode of the phone as before. Press the refresh button on the tool.
• If the tool recognizes your phone, click on the Select button in the address bar of the tool to show the folder where the ROM data is kept. ROM will be installed on your phone as soon as you press the flash button. The whole process may take a few minutes to complete.

Now your phone will boot into the newly installed Global or China ROM. After buying a new phone, you will see a setup screen like the setup screen. All data on your phone has been erased since it was flashed.

And this way you can successfully go from China ROM to Global or from Global ROM to China ROM.