Download and Install LineageOS 18 on Redmi Note 9S / Note 9 Pro

The Redmi Note 9S / Note 9 Pro (joyeuse) has received the first LineageOS 18 ROM build. LineageOS 18 is based on the latest Android 11 update. The base of the ROM comes from the Android Open Source Project (AOSP) code, which means it offers a stock Android experience. Below you can download and install the LineageOS 18 ROM (maintained by gigahurts) alongside the latest Google apps on your Redmi Note 9S.

LineageOS 18 Features

lineageos 18 redmi note 9s

LineageOS 18 is a custom ROM available that can be downloaded and installed on many Android devices. It based on Google’s AOSP (Android Open Source Project) and it offers the stock Android experience. This particular version of the ROM is based on Android 11. It has all the new features including Bubbles, screen recording ability, smart replies, device controls, media controls, and more.

Additionally, the ROM offers other essential and helpful applications for an even better experience. It includes apps such as AudioFX (audio optimizer), a lightweight browser that works well even on low-end devices, a good camera app, trebuchet (a highly customizable launcher), terminal, and more. Additionally, LineageOS has some useful features that are not included in the original AOSP code. For example, there are custom Quick Settings tiles, LiveDisplay, lock screen customization, system profiles, PIN scramble, privacy guard, and button customization.

It offers other helpful applications such as AudioFX, a lightweight browser, and Trebuchet, a highly customizable launcher. Furthermore, LineageOS offers features such as system profiles, lock screen customization, root access, expanded desktop, custom button placement, LiveDisplay, Protected Apps, PIN scramble, custom pattern sizes, call recording and more.

How To Install LineageOS 18 on Redmi Note 9S

WARNING!

You are about to install a custom ROM on your Redmi Note 9S. If you properly follow the tutorial below, you will be running the latest ROM in no time. However, please note that there might be issues along the way. We shall not be held responsible if you damage or brick your phone. Please proceed at your own risk.

Known Issues

  • Fast charging
  • MTP

Prerequisites

In order to flash LineageOS 18 on your phone, you need to have an unlocked bootloader. You cannot do this if you have a locked bootloader. Furthermore, you need a custom recovery to flash the flashable ZIP file. For this, you need a custom recovery. We recommend you to use MIATOL PBR.

  • Backup everything on your phone before you do anything. A factory reset is always recommended when installing a new ROM, especially if the old ROM is not the same as the old one.
  • Charge your phone to at least 60%. In case something goes wrong and the phone gets stuck, it will not turn off due to low battery.
  • Make sure you have a custom recovery installed. MIATOL PBR is the recommended recovery for ROM installation. You need to be on the latest 11.0.7.0 QJZMIXM (EU) firmware.

lineageos 18 redmi note 9 pro

Download Center

LineageOS 18 ROM (source):

Android 11 Gapps (Download)

Install LineageOS 18 on the Redmi Note 9S

This version of LineageOS ROM only works on the Redmi Note 9S (joyeuse). Please do not install this ROM on any other Redmi devices, because you might brick your device.

  1. Download all the necessary files and transfer them to the internal storage of your Redmi Note 9S.
  2. Press and hold the power button. Tap on power off to turn off the phone.
  3. Hold and press the volume up + power buttons at the same time. Release them when you see the Mi boot animation logo. The phone will go into recovery mode.
  4. Before you flash the ROM, you need to format data. Do not wipe data!
  5. After formatting the data on your phone, tap on Install. and select the downloaded LineageOS 18 ROM file. Swipe to flash. Wait for the ROM to be installed.
  6. After the ROM is installed, tap on Install once again. This time, select the Android 11 Gapps package. Again, swipe right to install.
  7. Reboot your phone after you have performed everything above.

That is all you need to do to install LineageOS 18 on your Redmi Note 9S (joyeuse). If you go to the app drawer, you will also see apps such as YouTube, Google Maps, and Google Play Services, thanks to the Google Apps package that you installed. Additionally, you can now install Magisk to root the phone.

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