Do you want to customize the Android UI that runs on your Google Pixel 3 XL? If you feel the need of improved functionality that can offer new and more useful built-in apps, features and capabilities, then you should try a new custom ROM that’s based on the latest Android 9.0 Pie software. Well, in that regard, one of the best solution available for you is the AOSPExtended firmware which ensures the same pure/stock UI but with extended capabilities and tweaking opportunities. Bottom line, you can easily customize your Pixel 3 XL without losing that great stock and clean Android Pie UI.

So, AOSPExtended is a ported version of the stock Android 9.0 Pie OS. It represents a free aftermarket distribution of the official software in order to extend the built-in functionality. In that respect, this new custom ROM will be bringing features that cannot be found on the default Android OS that runs on the Google Pixel 3 XL. With the help of these new capabilities you can afterwards customize and optimize the Android system in order to obtain better results, depending on what you want to receive from your smartphone – bottom line, you can bump speeds, upgrade the battery life and improve general performance.

Thus, if you do want to change some things on your Google Pixel 3 XL now you can do it easily with the help of the AOSPExtended custom ROM firmware – the software is developed by those of xda-developers so we must thank them for this new update opportunity. Moreover, don’t associate this Android 9.0 Pie based update package with Google; you are about to complete an unofficial update process meaning that you will lose your phone’s warranty while following the steps explained below – the warranty can be restored on your smartphone only if the stock Android firmware is reinstalled as then you will manage to restore you handset back to factory state.

Now, for being able to set up the AOSPExtended on your Google Pixel 3 XL you first have to unlock the Android system that runs on your phone as otherwise the new firmware won’t run on your device. Therefore, you must unlock the bootloader of your phone first; then you need to gain root privileges and install a custom recovery image – the custom ROM can be flashed only from a custom recovery environment and we recommend the TWRP recovery software for the best update experience. Do note that all these additional operations are unofficial procedures, so be careful when following dedicated tutorials.

Backup your Google Pixel 3 XL. As you will see, the new Android 9.0 Pie based custom ROM can be successfully installed on your phone only if a full wipe is being performed first – you will have to make a hard reset and clear app data cache. Shortly, if you don’t complete a backup you will end up in losing your contacts, call logs, texts, images, videos, audio files, market apps, internet settings, calendar info, saved passwords, IMEI / NVRAM data and similar other personal files. By the way, the backup can be performed by using Google’s cloud services, by managing other built-in backup apps, by using an external storage device or by downloading dedicated backup and restore apps from Google Play.

A Nandroid backup will also be a good idea as it can help you smartly manage unexpected problems – a Nandroid backup will save a copy of the stock Android OS which means that you can easily go back to stock if the AOSPExtended will not run as you expected.

A computer is needed as you need to download the required files there. Don’t worry, you won’t have to install third party flashing programs as the update process will be completed, as already explained, from recovery mode.

On your Google Pixel 3 XL you have to enable Developer Options, if this field isn’t displayed under General Settings – go to About Phone and tap repeatedly on Built Number and do that until the ‘you are a developer’ message is returned. Afterwards, access the Developer Options field and from there check the USB Debugging feature.

Make sure that your handset and its USB cable can be used during the update operation. And, verify the power that’s left on your device as a charging process might be required – you have to plug in the charger if the power left is lower than 50% (in that case your phone might get turned off right while you try to complete the steps explained and then severe problems might cause malfunctions on your Pixel 3 XL – you can end up in soft-bricking your Android device so be careful).

How to Update Google Pixel 3 XL with AOSPExtended Android 9.0 Pie Custom ROM Firmware

  1. Download the AOSPExtended custom ROM package that’s available for your Google Pixel 3 XL and save the update file on desktop; you can get the firmware file from this page.
  2. Also download compatible Google Apps – this package isn’t included on the update file so it must be flashed separately. Also save the file on desktop.
  3. Switch off your Android device and wait a few moments while the power off process is completed.
  4. Reboot your Google Pixel 3 XL into recovery mode.
  5. In recovery choose to initiate a full wipe by selecting: ‘wipe data factory reset’ followed by ‘wipe cache partition’ and by ‘wipe dalvik cache’.
  6. Return to Android mode when that’s done.
  7. Connect your smartphone with your computer with the help of the USB cable.
  8. From desktop transfer the downloaded files and place them on your phone.
  9. Disconnect your Pixel 3 XL from your computer and power off your device in the end.
  10. Go to recovery mode again and from TWRP recovery tap on Install. Next, pick the Android Pie based custom ROM file and swipe in order to start the update procedure.
  11. When done, repeat the step from above and set up Google Apps on your device.
  12. In the end, from main menu of recovery choose to return to Android Mode.
  13. That’s all.

There you have it; now the AOSPExtended custom ROM firmware should run on your Google Pixel 3 XL thus you should start testing this new Android 9.0 Pie software. You can share your own impressions with us and with our readers by using the comments field from below. For other update opportunities available for your Google Pixel device stay close or just check out our ‘how to’ page. Enjoy.

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