How to Install LineageOS 21 on Your Samsung I9301I Galaxy S3 Neo

If you’re looking to extend the life of your Samsung I9301I Galaxy S3 Neo or simply want more control over your smartphone’s software, installing a custom ROM like LineageOS 21 is a great way to breathe new life into your device. LineageOS is a popular Android-based operating system that offers a clean, customizable, and privacy-focused experience. In this guide, we’ll walk you through all the methods to install LineageOS 21 on your Samsung I9301I Galaxy S3 Neo and provide step-by-step instructions for a smooth installation process.

Why Install LineageOS 21 on Your Samsung I9301I Galaxy S3 Neo?

Before we dive into the installation process, let’s discuss why you might want to install LineageOS on your Samsung I9301I Galaxy S3 Neo:

• Remove Bloatware: Many Samsung smartphones come with pre-installed apps and services that you may never use. LineageOS is free from unnecessary bloatware, giving you a cleaner and faster experience.
• Get the Latest Features: Samsung might stop providing updates for your device after a few years, but LineageOS keeps your phone updated with the latest features and security patches.
• Customization: LineageOS offers deeper customization options, from themes to performance tweaks, so you can make your Samsung I9301I Galaxy S3 Neo truly yours.
• Improved Privacy and Security: With LineageOS, you get better control over your privacy settings and built-in security features that aren’t always available on stock firmware.

Now that you know why installing LineageOS is a smart choice, let’s go over the different methods to install it on your Samsung I9301I Galaxy S3 Neo.

Before You Start: Important Preparations

Before you begin the installation, there are a few things you need to do to prepare your Samsung I9301I Galaxy S3 Neo:

1. Backup Your Data: Installing a custom ROM will wipe all the data on your phone. Make sure to back up everything important.
2. Unlock Bootloader: To install a custom ROM like LineageOS, you need to unlock the bootloader of your Samsung I9301I Galaxy S3 Neo. You can find instructions for unlocking your bootloader on the official Samsung website or through tutorials.
3. Install ADB and Fastboot: You’ll need to install Android Debug Bridge (ADB) and Fastboot on your computer. These tools are essential for flashing custom ROMs. You can download them from here.
4. Download the Latest LineageOS 21 for Samsung I9301I Galaxy S3 Neo: You can download the latest version of LineageOS 21 for your Samsung I9301I Galaxy S3 Neo model from the official LineageOS website. Make sure to select the correct version for your device. You can find it here.

Method 1: Installing LineageOS 21 on Samsung I9301I Galaxy S3 Neo via TWRP Recovery

The most common method to install LineageOS is by using TWRP (Team Win Recovery Project), a custom recovery tool that allows you to flash custom ROMs.

Step-by-Step Guide to Install LineageOS 21 on Samsung I9301I Galaxy S3 Neo via TWRP

1. Download TWRP Recovery: First, download the appropriate TWRP image for your Samsung I9301I Galaxy S3 Neo model from the official TWRP website here.
2. Flash TWRP Recovery:

• Connect your Samsung I9301I Galaxy S3 Neo to your computer via USB.
• Open a command prompt and navigate to the folder where you have ADB and Fastboot installed.
• Reboot your phone into fastboot mode by typing:
  adb reboot bootloader
• Once your phone is in bootloader mode, flash TWRP with the following command:
  fastboot flash recovery twrp.img

1. Boot into TWRP: Once TWRP is installed, reboot your phone into recovery mode by holding down the Power + Volume Up buttons simultaneously.
2. Wipe Data: In TWRP, go to “Wipe” and select “Advanced Wipe.” Check the boxes for “Dalvik Cache,” “System,” “Data,” and “Cache,” then swipe to wipe.
3. Install LineageOS 21:

• Go to “Install” in TWRP, navigate to the LineageOS 21 file you downloaded earlier, and swipe to confirm the flash.
• Once LineageOS is installed, you can also flash the Google Apps package (GApps) if you want access to the Play Store and other Google services. Download the GApps package from Open GApps.

1. Reboot Your Phone: Once the installation is complete, reboot your Samsung I9301I Galaxy S3 Neo. The first boot may take a few minutes, but once it’s done, you’ll be running LineageOS 21!

Method 2: Installing LineageOS 21 on Samsung I9301I Galaxy S3 Neo via Heimdall

Heimdall is an open-source tool for flashing firmware onto Samsung devices. If you’re using a Linux or macOS system, Heimdall is an excellent alternative to ADB and Fastboot.

Step-by-Step Guide to Install LineageOS 21 on Samsung I9301I Galaxy S3 Neo via Heimdall

1. Download Heimdall: Download the latest version of Heimdall from the official website here.
2. Extract the LineageOS Package: Once you’ve downloaded LineageOS 21, extract the contents of the zip file. You’ll need these files for flashing.
3. Connect Your Samsung I9301I Galaxy S3 Neo: Put your Samsung I9301I Galaxy S3 Neo in download mode by turning it off and holding the Power + Volume Down buttons simultaneously. Connect it to your computer using a USB cable.
4. Flash LineageOS with Heimdall:

• Open the Heimdall Suite and load the LineageOS package.
• Select the appropriate partitions (System, Boot, Recovery) for flashing.
• Click “Start” to begin the flashing process.

1. Reboot Your Device: Once the flashing is complete, reboot your Samsung I9301I Galaxy S3 Neo and enjoy your new LineageOS 21 experience!

Method 3: Installing LineageOS 21 on Samsung I9301I Galaxy S3 Neo via Odin (For Windows Users)

Odin is Samsung’s official flashing tool for Windows and can also be used to install LineageOS 21 on your Samsung I9301I Galaxy S3 Neo.

Step-by-Step Guide to Install LineageOS 21 on Samsung I9301I Galaxy S3 Neo via Odin

1. Download Odin: Download the latest version of Odin from here.
2. Download the LineageOS 21 Package: Make sure you have the correct LineageOS 21 package for your Samsung I9301I Galaxy S3 Neo from the LineageOS website.
3. Boot Your Samsung I9301I Galaxy S3 Neo into Download Mode:

• Power off your Samsung I9301I Galaxy S3 Neo.
• Press and hold Power + Volume Down + Home (if applicable) to boot into Download Mode.

1. Connect Your Samsung I9301I Galaxy S3 Neo to Your PC: Using a USB cable, connect your phone to your computer. Odin should detect your device.
2. Load the LineageOS Files in Odin:

• In Odin, click on the “AP” button and select the LineageOS package you downloaded.
• Ensure that only “Auto Reboot” and “F. Reset Time” are checked.

1. Flash LineageOS 21: Click the “Start” button in Odin to begin the flashing process. Once completed, your Samsung I9301I Galaxy S3 Neo will reboot automatically.

Conclusion: Enjoy Your Samsung I9301I Galaxy S3 Neo with LineageOS 21

Now that you’ve successfully installed LineageOS 21 on your Samsung I9301I Galaxy S3 Neo, you can enjoy the latest features, customizations, and enhanced performance that this custom ROM has to offer. Whether you used TWRP, Heimdall, or Odin, you’ve taken a significant step in gaining more control over your smartphone.

With LineageOS, your Samsung I9301I Galaxy S3 Neo is now free from unnecessary bloatware and running on the latest Android technology. Don’t forget to check for regular updates on the official LineageOS website to keep your Samsung I9301I Galaxy S3 Neo secure and up to date!

Happy flashing!