Download And Install AOSP Android 11 for Oppo A57

In this tutorial, we will show you how to install the AOSP Android 11 on Oppo A57. Recently, Google released its latest stable Android 11 for the general...

Mohammed Huwais

Last updated on March 11, 2026

Mohammed Huwais

Author

I started my career as a blogger in 2014 and also worked on an Android niche platform to gain extra income. I cover the topic on How to guides, software updates, Custom ROM updates and also product review. I'm 24 years old, completed MBA (Master of Business Administration) from Sikkim Manipal University.

Android 11 and Its Features:

Well, Android 11, Google’s 11th iteration looks similar to Android 10 but with a handful of new features and changes. 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 Oppo A57:

With such a long list of goodies to offer, no doubt you will want to try out the AOSP Android 11 on Oppo A57. 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 sections, you may then proceed with the installation steps.

Prerequisites

Tested only on Oppo A57

First and foremost, create a complete device backup.

Next time, enable USB Debugging on your Oppo A57. 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.
USB Debugging k20 pro

Your device also needs to have the bootloader unlocked.

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 Oppo A57. You could refer to our comprehensive tutorial on how to Install TWRP Recovery For Oppo A57.

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.

LineageOS 18.1: Download Link
Download Android 11 Gapps

Once you have downloaded the above files, transfer them to your device. Then proceed with the below steps to install AOSP Android 11 on your Oppo A57 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.

Install AOSP Android 11 on Oppo A57

Connect your device to the PC via USB cable. Make sure USB Debugging is enabled.
Then head over to the platform-tools folder, type in CMD in the address bar, and hit Enter. This will launch the Command Prompt.
Execute the below command in the CMD window to boot your device to TWRP Recovery:
```
adb reboot recovery
```
Now head over to the wipe section and format system, data, and cache. Perform a right swipe to complete the format.

TWRP Home
It’s now time to flash the AOSP Android 11 ROM onto your Oppo A57. For that, head over to Install, select the AOSP ROM ZIP file and perform a right swipe to install the file.
If you want Google Apps as well, then you need to flash it at this instance itself. Go to Install, select the GApps ZIP file, and perform a right swipe to flash this file.
When that is done, you may reboot your device. Head over to Reboot and select System.

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 Oppo A57. Do keep in mind that the first boot might take up some time and you might have to set up your device from scratch.

Furthermore, once you have installed the ROM, do share your opinions about the same in the comments section. Rounding off, here are some iPhone Tips and Tricks, PC tips and tricks, and Android Tips and Trick that you should check out as well.