In this tutorial, we will show you how to install the AOSP Android 11 on HTC One M9. 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 HTC One M9
With such a long list of goodies to offer, no doubt you will want to try out the AOSP Android 11 on HTC One M9. 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 HTC One M9
- First and foremost, create a complete device backup.
- Next time, enable USB Debugging on your HTC One M9. 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 the bootloader via the Fastboot 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 HTC One M9. You could refer to our comprehensive tutorial on how to Install TWRP Recovery For HTC One M9.
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.
Downloads
LineageOS 18.0: XDA Development Page | Credits to Claymore1297
Download Android 11 Gapps



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