if your Xiaomi smartphone is already old and the manufacturer hasn’t released updates to your device yet, or you want to add some extra features options not found in the official ROM to your Xiaomi mobile, then you can Download and Install MIUI 12 on Xiaomi Mi 9.
The MIUI 12 gives the best and highly secure user interface with a new UI with infinite customization options. The latest MIUI 12 will bring a number of features to your Xiaomi Mi 9 such as Super wallpapers & animated AOD, New system animations, Perfect dark mode 2.0, Better multitasking, AI phone assistant, Classic themes in super quality, Health tracker, Improved privacy and security tools, and much more.
MIUI 12 is an unofficial version of the OS to replaces the pre-installed Android operating system on your Xiaomi device, to upgrade Mi 9 smartphones to MIUI 12 before the MIUI 12 release date. MIUI 12 will be much better from MIUI 11.
The Custom ROM is the modified version of the Original ROM which gives you tonnes of customizations on your Xiaomi Mi 9 like Root Access, Additional Features, and System Tweaks, Eliminate Bloatware, Alternative UI, Install incompatible applications, Better Performance, Receive the latest Android updates…
if you want the latest features, better performance, and more frequent updates, then customize your Xiaomi Mi 9 phone, and installing MIUI 12 based on Android 10 is the right choice for you.
Install Custom ROM on your Xiaomi Mi 9 voids its warranty. flashxiaomi cannot be held responsible for any damage caused If you do not follow the procedure correctly.
Make sure to unlock Xiaomi Mi 9 bootloader:
Unlock Bootloader Xiaomi Smartphone & Tablet
Install Xiaomi USB drivers on your computer
Install Minimal ADB and Fastboot
Download the TWRP Recovery for Xiaomi Mi 9
Download MIUI 12 20.4.27 ROM for Mi 9
Download MIUI 12 20.5.11 ROM for Mi 9
Download MIUI 12 20.5.18 ROM for Mi 9
Download MIUI 12 20.5.21 ROM for Mi 9
Download MIUI 12 20.5.26 ROM for Mi 9
Download MIUI 12 20.5.28 ROM for Mi 9
Download MIUI 12 20.6.1 ROM for Mi 9
How to boot Xiaomi Mi 9 to TWRP recovery.
- Located the ADB and Fastboot folder on your computer
- Extract TWRP Recovery file on the ADB and Fastboot folder
- Rename the TWRP Recovery file to TWRP.img
- In an empty area, on your keyboard hold down the shift key and right-click with the mouse, then select Open a command window here.
- Restart your Xiaomi Mi 9 in Fastboot mode:
- Power off your Xiaomi mobile.
- Press and hold The Power button + Volume Down key together for a few seconds.
- Then Connect your Xiaomi Mi 9 to your PC/laptop via USB cable.
- Verify that your Xiaomi Mi 9 recognized in Fastboot mode:
- Fastboot devices
- Boot the recovery TWRP:
- Fastboot boot recovery TWRP.img
- You have successfully Boot Xiaomi Mi 9 to TWRP recovery.
Install MIUI 12 on Xiaomi Mi 9
- Copy the Mi 9 MIUI 12 ZIP ROM to the internal storage or SD card.
- Tab on Wipe => Advanced Wipe.
- Check Dalvik Cache, System, Data, and Cache.
- Swipe to start the wipe.
- Go Back and Tap on the Install button.
- Select the Xiaomi Mi 9 MIUI 12.zip file.
- Swipe to Confirm Flash
- Then Tap on Reboot to Restart your Xiaomi Mi 9.
- Congratulations, you’re now running MIUI 12 on Mi 9.
The first boot may take a while, but when it’s up and running, you’ll set things up like any other Android phone.