In this tutorial, we will show you how to install the AOSP Android 11 on Xiaomi Redmi Note 9 Pro Max (codenamed excalibur). Recently, Google released its latest stable Android 11 for the general public. The update brings notification history, Chat bubbles, Conversation notifications, screen recorder, new media controls, smart device controls, one-time permission, improved dark theme with the scheduling system, app suggestions, wireless android auto, and many more.
For more, check out our article Android 11 supported list, Android 11 Custom ROM list, best Android 11 features, and many more.
How to Install AOSP Android 11 on Redmi Note 9 Pro Max (excalibur)
With such a long list of goodies to offer, no doubt you will want to try out the AOSP Android 11 on Redmi Note 9 Pro Max. But before we list out the installation steps, please go through the prerequisites section. Make sure your device meets all the mentioned requirements. After this, go through the working features and the list of known issues present in this ROM. Once you have gone through all the requirements section, you may then proceed with the installation steps.
Prerequisites
- Tested only on Xiaomi Redmi Note 9 Pro Max (excalibur)
- First and foremost, create a complete device backup.
- Next time, enable USB Debugging on your Redmi Note 9 Pro Max. This will make your device recognizable by your PC in ADB mode. So head over to Settings > About Phone > Tap on Build Number 7 times > Go back to Settings > System > Advanced > Developer Options > Enable USB Debugging.
- Your device also needs to have the bootloader unlocked. If you haven’t done so, then refer to our detailed guide on How To Unlock Bootloader On Redmi Note 9 Pro Max [Official Method].
- Next up, you will also need to install the TWRP Recovery on your device. This will be needed to flash the AOSP Android 11 on your Redmi Note 9 Pro Max. You could refer to our comprehensive tutorial on how to Install TWRP Recovery For Redmi Note 9 Pro Max.
What’s Working?
- Boots
- RIL (Calls, SMS, Data)
- Fingerprint
- Wi-Fi
- Bluetooth
- Camera
- Camcorder
- Video Playback
- Audio
- Sensors
- Flash
- LED
- Volte
- VoWiFi
- GPS
Known Issues
- Proximity sensor won’t shut off screen during a call
- VoLTE (fixed internally, wait for next build
- Phone heats up while charging.
Download AOSP Android 11
Before you download the firmware file, there is a pretty important worth mentioning. You should only use the proper vendor and firmware of your device of stable ROM. On that note, we would like to thank XDA Junior Member _4PERTURE_ for this ROM.
Once you have downloaded the above files, transfer it to your device. Then proceed with the below steps to install AOSP Android 11 on your Redmi Note 9 Pro Max device.
Warning
Before we begin with this procedure, I would strongly recommend you to create a backup of your device storage and all your files stored on your device. Moreover, it is advised to follow the steps mentioned in this post very carefully to avoid permanent damage or to brick your device. If anything goes wrong the author or GetDroidTips is not responsible for it.
Your device will now boot to the newly installed OS. With this, we conclude the guide on how to install the AOSP Android 11 on Redmi Note 9 Pro Max (excalibur). Do keep in mind that the first boot might take up some time and you might have to set up your device from scratch.
