Guide to Rooting and Installing Custom ROM on Vivo X100 Ultra

 The Vivo X100 Ultra is a powerful flagship device, known for its high-end hardware and fluid software experience. While the phone comes with a robust feature set, advanced users may want to push its limits by rooting and installing a custom ROM. Rooting unlocks the potential for system-level modifications, and installing custom ROMs can help you enjoy new features and a more tailored experience.

In this guide, we’ll walk you through the process of rooting the Vivo X100 Ultra and flashing a custom ROM. From unlocking the bootloader to flashing a custom recovery and ROM, we’ve got everything covered.

Warning

Rooting your device voids its warranty, and the process may cause potential issues if not done properly. Proceed with caution and back up all your data before beginning.

Essential Preparations

Before diving into the actual steps, here’s a checklist of what you’ll need:

  1. Unlocked Bootloader: Rooting and custom ROM installation require an unlocked bootloader.
  2. TWRP Recovery: A custom recovery like TWRP is needed for flashing.
  3. Magisk (Root Tool): For rooting your device.
  4. Custom ROM: Choose your preferred ROM, such as LineageOS or Pixel Experience.
  5. ADB & Fastboot Tools: To unlock the bootloader and flash custom recovery.
  6. USB Cable & Computer: Necessary to connect your device to your PC.
  7. Backup Files: Rooting and flashing ROMs will erase data, so ensure you’ve backed up everything important.

Step 1: Unlock the Bootloader

The first step to rooting the Vivo X100 Ultra is unlocking the bootloader, which allows system modifications and flashing of custom ROMs.

1.1 Enable Developer Mode

  • Go to Settings > About Phone, then tap the Build Number seven times to enable Developer Mode.
  • Next, head to Settings > Developer Options and turn on OEM Unlocking and USB Debugging.

1.2 Boot into Fastboot Mode

  • Power off your Vivo X100 Ultra.
  • Hold the Volume Up + Power buttons simultaneously to enter Fastboot Mode.
  • Use a USB cable to connect the device to your computer.

1.3 Unlock Bootloader via Fastboot

  • On your computer, navigate to where you have ADB and Fastboot installed.
  • Open a command prompt or terminal window and verify the device connection using:
    fastboot devices
  • To unlock the bootloader, execute:
    fastboot oem unlock
  • On your phone, confirm the bootloader unlock by using the volume buttons to navigate and the power button to select.

Keep in mind, unlocking the bootloader will wipe all data from your phone, so it will reboot and perform a factory reset.

Step 2: Install TWRP Custom Recovery

With the bootloader unlocked, the next step is to install TWRP custom recovery. TWRP allows you to flash ROMs, root your device, and perform backups.

2.1 Download the TWRP Recovery Image

  • Download the TWRP image file for the Vivo X100 Ultra from the official TWRP website.

2.2 Flash TWRP Recovery

  • Boot into Fastboot Mode again by powering off your phone and holding Volume Up + Power.

  • Connect your phone to your PC and open the command prompt/terminal where ADB and Fastboot are installed.

  • Flash the TWRP recovery image with the following command:

    fastboot flash recovery twrp.img

    (Replace twrp.img with the exact filename of the TWRP image you downloaded.)

  • After flashing, reboot your phone into recovery mode using:

    fastboot reboot recovery

Your Vivo X100 Ultra should now boot into TWRP.

Step 3: Root the Vivo X100 Ultra Using Magisk

Once TWRP is installed, you can root your phone using Magisk, which offers systemless root access and a wide range of modules for customization.

3.1 Download Magisk ZIP

  • Download the latest Magisk ZIP file and copy it to your phone’s internal storage.

3.2 Flash Magisk via TWRP

  1. In TWRP, select Install.
  2. Locate the Magisk ZIP file on your phone.
  3. Swipe to confirm the installation.
  4. After the process completes, tap Reboot System.

Once your phone reboots, it should now be rooted. To manage root permissions and install modules, install the Magisk Manager app.

Step 4: Flash a Custom ROM

With root access and TWRP recovery installed, you can now flash a custom ROM on your Vivo X100 Ultra. Custom ROMs offer a fresh experience, with different features and performance improvements.

4.1 Download a Custom ROM

  • Head over to the official sites of custom ROM developers (like LineageOS, Pixel Experience, etc.) and download the ROM of your choice.
  • Transfer the downloaded ROM to your phone’s internal storage.

4.2 Boot into TWRP Recovery

  • Power off your phone and hold Volume Up + Power to boot into TWRP recovery.

4.3 Wipe the System

  • In TWRP, go to Wipe > Advanced Wipe.
  • Select System, Data, Cache, and Dalvik/ART Cache.
  • Swipe to confirm the wipe.

4.4 Install the Custom ROM

  1. Return to the TWRP home screen and select Install.
  2. Locate the custom ROM ZIP file on your device and select it.
  3. Swipe to confirm the installation.
  4. Once the ROM is installed, reboot your phone.

The device will now boot into the custom ROM you flashed. The initial boot may take a few minutes, so don’t worry if it seems slower than usual.

Step 5: Flash GApps (Google Apps)

If the custom ROM you installed doesn’t include Google Apps (such as the Play Store, Gmail, etc.), you’ll need to flash a GApps package separately.

  1. Download the appropriate GApps package based on the version of Android your ROM is running.
  2. Boot back into TWRP recovery.
  3. Select Install and flash the GApps ZIP file just like you did with the custom ROM.
  4. Reboot your phone.

Now your Vivo X100 Ultra will boot into the custom ROM with all Google apps installed and functioning.

Post-Installation and Customization

After rooting and installing a custom ROM on your Vivo X100 Ultra, you can further customize your device in several ways:

  • Magisk Modules: Install modules from the Magisk Manager to tweak performance, enhance battery life, or customize the user interface.
  • Remove Bloatware: Uninstall system apps or bloatware that came with the stock ROM.
  • Performance Mods: Custom ROMs often offer tools and features to enhance the device’s performance.
  • UI Tweaks: Many custom ROMs provide deep customization options, allowing you to change everything from the status bar to gesture navigation.

Benefits of Rooting and Custom ROMs

  1. Full Control: Rooting grants you administrative access, allowing you to make system-level changes and optimizations.
  2. Customization: Custom ROMs let you modify the look and feel of your phone, as well as introduce features not available in stock firmware.
  3. Improved Performance: Custom ROMs are often optimized for speed and efficiency, resulting in better battery life and overall performance.
  4. Extended Updates: Even after official software support ends, you can keep your device updated with the latest Android versions through custom ROMs.
  5. Advanced Backup Options: With TWRP, you can perform complete system backups, allowing you to restore your device if anything goes wrong.

Conclusion

Rooting and installing a custom ROM on the Vivo X100 Ultra opens the door to a whole new level of customization, performance enhancements, and freedom. While the process requires caution and precision, the benefits of rooting and running a custom ROM are well worth it for advanced users looking to get the most out of their device.

By following this guide, you now have the tools and knowledge to root your Vivo X100 Ultra and start exploring the world of custom ROMs and tweaks. Enjoy your rooted and customized device, and make the most of its new capabilities!

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