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How to Install Android 12 AOSP ROM on Poco X3

In this guide, we will show you the steps to install the Android 12 AOSP Custom ROM onto your Poco X3 device. When an octa-core Snapdragon 732G chipset with up to 8 GB RAM and a massive 6000mAH battery is on the cards, one might generally associate it with a high-budget device. But you could easily get your hands on all these goodies without even burning a hole in your pockets, all thanks to this impressive lineup from the Chinese OEM. Its Poco series has managed to carve out a niche segment of a loyal fanbase.

This is only about to grow with each new addition to this family. In this regard, the X3 has already caught the attention of the masses. Not only for its impressive features but it is also proving to be quite a popular name in the custom development domain as well. The perfect example of it is the fact that it has already been blessed with the latest OS build. You could now install the Android 12 AOSP ROM onto your Poco X3 device. And this guide shall help you with just that. Follow along.

What’s New in Android 12?

Just to recap, the Silicon Valley giants have introduced a plethora of new and interesting features in the twelfth iteration of the OS. These include the massive UI revamp thanks to the Material You design. Likewise, there’s a Wallpaper-based UX Theming that will pick up the major color from the wallpaper and theme it across various device components (such as the Notifications panel and Settings menu). Then there is an addition of the Privacy Dashboard as well.

android 12 wallpaper based themes

This will tell you the date and time when an app asked for the location, camera, and microphone permissions. Moreover, there are some new accessibility features as well. These include the likes of Camera Switch that allows you to take full control of your device via your facial gestures. And you could now welcome all these features onto your device. Given here are the detailed instructions to install Android 12 AOSP ROM on the Poco X3.

How to Install Android 12 AOSP ROM on Poco X3

How to Install Android 12 Custom ROM on Poco X3

Before proceeding with the below steps, make sure to take a backup of all the data on your device. Droidwin and its members wouldn’t be held responsible in case of a thermonuclear war, your alarm doesn’t wake you up, or if anything happens to your device and data by performing the below steps.

STEP 1: Install Android SDK

install adb platform tools windows

First and foremost, you will have to install the Android SDK Platform Tools on your PC. This is the official ADB and Fastboot binary provided by Google and is the only recommended one. So download it and then extract it to any convenient location on your PC. Doing so will give you the platform-tools folder, which will be used throughout this guide.

STEP 2: Enable USB Debugging and OEM Unlocking

Next up, you will also have to enable USB Debugging and OEM Unlocking on your device. The former will make your device recognizable by the PC in ADB mode. This will then allow you to boot your device to Fastboot Mode. On the other hand, OEM Unlocking is required to carry out the bootloader unlocking process.


So head over to Settings > About Phone > Tap on Build Number 7 times > Go back to Settings > System > Advanced > Developer Options > Enable USB Debugging and OEM Unlocking.

STEP 3: Unlock Bootloader on Poco X3

Next up, you will also have to unlock the device’s bootloader. Do keep in mind that doing so will wipe off all the data from your device and could nullify its warranty as well. So if that’s all well and good, then please refer to our detailed guide on How to Unlock Bootloader on any Xiaomi Device.


STEP 4: Install TWRP Recovery on Poco X3

In order to flash the Android 12 AOSP Custom ROM onto your Poco X3, you will have to install the TWRP Recovery. So refer to our guide on How to Install TWRP Recovery on Xiaomi Poco X3.

STEP 5: Download Android 12 ROM

First off, let’s make you aware of all the features that are working and the ones that aren’t. Go through them and make your decision accordingly.

What’s Working/Features

  • GMS (gapps) and some pixel goodies included
  • Monet theming engine with Wallpaper Colors
  • Monet in all supported gapps & gboard
  • New at a glance in lockscreen & launcher
  • Grid size and themed icons support
  • New AOSP default wallpaper
  • Pixel Launcher included
  • Google Sans as default font
  • Game Dashboard, Google Assistant 2.0
  • Refresh rate settings (min/max/preferred)
  • Safetynet passes out of the box
  • AND MANY MORE…………..

Xiaomi Parts included

  • Ambient display
  • Mi Sound Enhancer
  • Clear speaker
  • LCD features (HBM/CABC)
  • Thermal profiles
  • Game mode


  • Recoveries can’t decrypt data, as of now
  • Live Captions might not work


poco x3 android 12 rom

Download ROM

You may now grab hold of the latest Android 12 ROM for your device from the below link [Credits: XDA Senior Member adithya-r]. You don’t need to flash GApps, it is already included with the ROM.

Download Firmware+Vendor/Encryption Disabler/Magisk

You will also have to flash the “Android 11” firmware+vendor package onto your device. It is compulsory if you are coming from stock ROM and it optional but highly recommended for stock MIUI users. So download it from below (corresponding to your region):

Firmware+Vendor for Poco X3: Download Link

Moreover, if your device is encrypted, then you will have to decrypt it as well. This could be done by flashing the encryption disabler file. So download it from the below link:

DFE (Encryption Disabler): Download Link

[Optional] If you wish to root your Poco X3 runing Android 12 AOSP ROM, then download the Magisk App. After that, rename the Magisk.apk to Magisk.zip file to make it TWRP Flashable:

Magisk App: Download Link

Once you downloaded all these files, make sure to transfer them to your device.

STEP 6: Boot to TWRP Recovery

  1. Connect your device to the PC via USB cable. Make sure USB Debugging is enabled.
  2. Then head over to the platform-tools folder, type in CMD in the address bar, and hit Enter. This will launch the Command Prompt.
  3. Type in the following command in the CMD window:
    adb reboot recovery
  4. Your device will now boot to the TWRP Recovery.

STEP 7: Flash Android 12 ROM on Poco X3

  1. To begin with, go to the Wipe section and tap on Advanced Wipe.
  2. Then select the Data, Cache, and Dalvik Cache partitions and perform a right swipe to wipe these partitions.
    wipe data dalvik twrp install android 12 rom poco x3
  3. Once the partitions have been wiped, head over to the Install section of TWRP.
  4. Then select the Firmware+Vendor ZIP file and perform a right swipe to flash it.
  5. Once done, again go to the Install section. This time select the Android 12 ROM file and perform a right swipe to flash it.
  6. [OPTIONAL] If you want to root your device, then flash the Magisk ZIP file right now itself.
  7. You will now have to decrypt the storage. For that, go to Reboot and select Recovery.
    reboot recovery twrp flash android 12 poco x3
  8. Once it reboots to TWRP, go to Install and flash the DFE ZIP file.
  9. After that, go to Wipe and tap on Format Data.
  10. Then type in YES in the space provided and tap on the checkmark button situated at the bottom right.
  11. That’s it. You may now reboot your device to the newly installed OS via Reboot > System.

So these were the steps to install the Android 12 AOSP Custom ROM onto your Poco X3 device. If you have any queries concerning the aforementioned steps, do let us know in the comments. We will get back to you with a solution at the earliest.