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Download/Install Lineage OS 15.1 on Redmi 3/3S Prime (Android 8.1 Oreo)

Download and Install Lineage OS 15.1 On Redmi 3/3S Prime (Android 8.1 Oreo)
Written by Dibyajyoti Kabi

Download/Install Lineage OS 15.1 On Redmi 3/3S Prime (Android 8.1 Oreo): Has anyone of you ever rooted their device? Have you tried to install a custom ROM? If the answer to both these questions was no, then that is going to change today. Today, in this post, we are going to give you a lot of information regarding Lineage OS 15.1 and how you can easily install it on your Redmi 3/3S Prime. Previously referred to as CyanogenMod, Lineage OS is one of the most popular lines of custom ROMs currently in the Android market. Lineage OS 15.1 is the latest update of this custom ROM and it is based on the source code of Android 8.1 Oreo.

Redmi Note 3 sports a 5.0-inch IPS LCD display screen with HD resolution of 1280×720 pixels, 16:9 ratio, and a 294 PPI density. It is powered by Qualcomm MSM8937 Snapdragon 430 Octa-Core 1.4GHz Cortex-A53 processor, Adreno 505 GPU, 2 GB RAM, 16 GB internal storage capacity, and a non-removable 4100mAh Li-Ion battery. It runs on Android 6.0.1 Marshmallow OS, and its other features include a 13.0 MP rear camera, a 5.0 MP front camera, Wi-Fi, Bluetooth v4.1, GPS, Accelerometer, A-GPS, Wi-Fi Hotspot, and more.

If you are a Redmi 3/3S Prime user who has been scouring the internet for a guide which will help you root your device and help install Lineage OS 15.1, then this is the perfect guide for you. Here, in this post, we will not only give you a step-by-step guide to help you install this update, but we will also be giving you all the details regarding custom ROMs, Lineage OS, its benefits, and more.

Android is the most used and popular mobile operating system in the world. There are more thousands and thousands of manufacturers which are making Android devices. The popularity of Android OS is because of the freedom of customization it offers. Unlike iOS, everything on an Android device (software related) can easily be modified to match users taste.

Android users can root their device easily and can install TWRP or any other recovery. The rooting process on Android is easier compared to iOS. Once custom recovery is installed, users can flash Custom ROMs which are modified Android Operating systems developed by an Android developer or a group of developers.

There are tons of things which users can do after rooting their device like flashing Custom ROMs, kernels and Mods. Most of the Custom ROMs are feature rich. They provide loads of customization options compared to the Stock ROM. Some of the Custom ROMs are well optimized for battery and performance. So, users are always in search for good custom ROMs for their Android smartphones.


What is Custom ROMs On Android?

Custom ROMs are based on Official Android source codes which are customized or developed by developers or a community of developers. Custom ROMs come with loads of extra customizations which makes them unique and popular among the android lovers. Remember, Custom ROMs are not provided by Google or other mobile vendors but are developed and maintained by the community and its contributors.

Some example: Lineage OS (Previously known as CyanogenMod), Paranoid Android etc.

Benefits Of Custom ROMs

1) Vanilla Android (Pixel Style)

Most Of the AOSP Based Custom ROMs are bloatware free and have very close to the stock look and feel which makes them super snappy. These ROMs are very optimized for battery and performance.

2) Root Access

Most of the Custom ROMs are pre-rooted. The process of gaining full admin control of the Android device is called Rooting On Android. It’s similar to running programs as administrators in Windows.

After rooting your device you can install different MODs, kernel, ROMs on your device. You can install latest Android updates (like the Android 8.0 Oreo) On old device by installing third party ROMs like Lineage OS 15.1 or 15.You can overclock the CPU and GPU of your device to get the best performance. You can hibernate any app you want. You can underclock the CPU to get better battery life.

For more information about Android rooting, check out our detailed post here > What Is Rooting Android Phone? Advantages And Disadvantages
3) Regular Updates

Most of the Android smartphone manufacturer provides 2-year software support and after that, the devices won’t get any official update. In that case, users have to fully depend on Custom ROMs to test the latest Android on their devices.

Most of the developers of the Custom ROMs provide a 4)regular update which is one of the best things about Custom ROMs.

4) Customization

Android is famous for Customization and Custom ROMs take this to another level. Unlike Stock vanilla android Custom ROMs come with various customization options. We are sharing few of them below

  • Users can enable or disable navigation bar
  • Users can customize navigation bar and Status bar icons
  • Some Custom ROMs come with different MODs
  • Some Custom ROMs come with Custom Kernels which allow users to Overclock or underclock the CPU and GPU.
  • Some Custom ROMs come with support for Third party themes
5) Battery and Performance

Most Of the Custom ROMs are very close to stock vanilla android in look. The Custom ROMs are very optimized which results in better battery life and smooth performance.


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  • Make sure the bootloader on your device is unlocked and your device is rooted and you have a custom recovery installed.
  • Make sure your device has more than 50% battery.
  • Make sure you have taken a backup of your important data. Now proceed To Install Lineage OS 15.1 ROM On Redmi 3/3S Prime.

Disclaimer is not responsible for any damage happened to your device(s) while following this guide, proceed at your own risk.

Download Lineage OS 15.1 For Redmi 3/3S Prime

Steps To Install Lineage OS 15.1 On Redmi 3/3S Prime | Android 8.1 Oreo Update

Install Lineage OS 15.1 On Redmi 3/3S Prime (Android 8.1 Oreo)

  • Make sure your device is rooted and have the latest TWRP recovery installed. (Check the Pre-Requirement Section Above)
  • First, download the files from the above link.
  • Now transfer the downloaded files to the internal storage of your device.
  • Now reboot to the TWRP recovery by holding your Armor and volume down buttons together for a few seconds.
  • Take a backup by selecting the option from the home screen and then your data and cache from the recovery menu.
  • Now select install and then browse for the downloaded ROM file and then select it.Next flash the Gapps file and then Magisk (optional).
  • Once the flashing process is completed, reboot your phone and you will be booted into thelatest Android

If you have any doubts regarding this article, feel free to comment below.

About the author

Dibyajyoti Kabi

Dibyajyoti an Android enthusiast, a tech-blogger and an avid reader.He is graduated in is the founder and chief editor in

LineageOS 15.1 (Android 8.1 Oreo) Is now available for many devicesDownload Now