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How to Root and Unroot Motorola Razr Ultra (2025)

The Motorola Razr Ultra (2025), with its sleek 7-inch foldable pOLED display and powerful Snapdragon 8 Elite chipset, is a flagship flip phone that’s perfect for tech enthusiasts looking to customize their experience. Rooting your Razr Ultra unlocks endless possibilities, from installing custom ROMs to enhancing performance with root-only apps. However, rooting carries risks like voiding your warranty and potential app compatibility issues. This step-by-step guide details how to safely root your Motorola Razr Ultra and unroot it to restore the stock state. Follow these instructions carefully to avoid bricking your device.

Why Root Your Motorola Razr Ultra?

Rooting grants superuser access to your device’s Android system, enabling you to:

  • Install custom ROMs for a personalized UI.

  • Use root-only apps like AdAway or Titanium Backup.

  • Optimize performance by tweaking system settings or removing bloatware.

  • Access advanced features not available on stock firmware.

However, rooting may void your warranty, disrupt apps like Google Wallet due to SafetyNet/Play Integrity checks, and risk data loss. Always back up your data, as unlocking the bootloader wipes your device.

Prerequisites for Rooting Motorola Razr Ultra

Before you begin, ensure you have:

  • A Motorola Razr Ultra (2025, model XT2551) with at least 50% battery.

  • A Windows, Mac, or Linux PC with a USB-C cable.

  • Enabled Developer Options: Go to Settings > About Phone > Build Number and tap seven times.

  • Enabled OEM Unlocking and USB Debugging: Settings > System > Developer Options.

  • A full backup of your data, as unlocking the bootloader erases everything.

  • Downloaded tools: Motorola Rescue and Smart Assistant, Android Platform Tools (ADB and Fastboot), Motorola USB drivers (for Windows), and Magisk v26.4 APK (from GitHub, as Magisk v27 has compatibility issues with Razr 2024/2025 models).

Note: This guide assumes an unlocked bootloader, which may require a 7–10 day waiting period after enabling OEM Unlocking due to Motorola’s restrictions. Check XDA Forums for model-specific details, as U.S. models (e.g., XT2551-3) may have additional bootloader unlock challenges.

Step-by-Step Guide to Root Motorola Razr Ultra

Step 1: Unlock the Bootloader

Unlocking the bootloader is essential but wipes all data on your Razr Ultra.

  1. Enable Developer Options: Navigate to Settings > About Phone > Build Number, tap seven times, then enable OEM Unlocking and USB Debugging in Developer Options.

  2. Install Motorola USB Drivers and Platform Tools: Download Motorola USB drivers and Android Platform Tools from their official sites. Install them on your PC.

  3. Get Unlock Code: Connect your phone to the internet for 7–10 days to enable OEM Unlocking (it may be grayed out initially). Then, boot into Fastboot mode by powering off and holding Power + Volume Down. Run fastboot oem get_unlock_data in a command prompt or terminal from the Platform Tools folder to retrieve the unlock code. Submit this code on Motorola’s official bootloader unlock page to receive an unlock key.

  4. Unlock Bootloader: In Fastboot mode, run fastboot oem unlock UNIQUE_KEY (replace UNIQUE_KEY with the code from Motorola). Confirm on your device using the volume and power buttons. Your phone will wipe and reboot.

Warning: Unlocking may void your warranty and requires an internet connection for the unlock code.

Step 2: Download and Extract Firmware

You need the boot.img and init_boot.img files from your Razr Ultra’s firmware for Magisk rooting.

  1. Find Firmware Version: Go to Settings > About Phone or dial #1234# to note your firmware version (e.g., XT2551_T1TZS33.3-62-25-1-3).

  2. Download Firmware: Use Motorola Rescue and Smart Assistant to download the correct firmware for your Razr Ultra. Open the tool, sign in (or create an account), select Rescue, and choose Save Firmware to download without flashing.

  3. Extract Firmware Files: Extract the firmware ZIP to locate boot.img and init_boot.img. If unavailable, check XDA Forums for pre-extracted images specific to the Razr Ultra.

Step 3: Patch Firmware with Magisk

Magisk provides a systemless root, maintaining compatibility with most apps.

  1. Install Magisk: Download Magisk v26.4 APK (not v27 due to compatibility issues) from its official GitHub page and install it on your Razr Ultra.

  2. Transfer Firmware Files: Copy boot.img and init_boot.img to your phone’s storage (e.g., Downloads folder).

  3. Patch Files with Magisk: Open the Magisk app, tap Install next to Magisk, select Select and Patch a File, and choose init_boot.img. Repeat for boot.img. Magisk will generate patched files (e.g., magisk_patched_init_boot.img and magisk_patched_boot.img) in your Downloads folder.

  4. Move Patched Files: Transfer both patched files back to your PC’s Platform Tools folder.

Step 4: Flash the Patched Files

  1. Boot into Fastboot Mode: Power off your phone, then hold Power + Volume Down to enter Fastboot mode.

  2. Enter Fastbootd Mode: Some Razr Ultra models require fastbootd mode for flashing. Run fastboot reboot fastboot to switch to fastbootd mode.

  3. Flash Patched Images: In the Platform Tools folder, open a command prompt or terminal and run:

    • fastboot flash --slot=all boot magisk_patched_boot.img

    • fastboot flash --slot=all init_boot magisk_patched_init_boot.imgEnsure file names match exactly. If errors occur (e.g., “No such file or directory”), verify you’re in fastbootd mode and using the correct images.

  4. Reboot Device: Run fastboot reboot. Your Razr Ultra should boot with root access.

Step 5: Verify Root Access

  1. Install Root Checker: Download a Root Checker app from the Google Play Store.

  2. Verify Root: Open the app and tap Verify Root to confirm root access.

Step 6: Bypass SafetyNet/Play Integrity (Optional)

Rooting may break apps like Google Wallet or Netflix due to SafetyNet/Play Integrity checks. To fix:

  1. Enable Magisk Hide: In the Magisk app, go to Settings > Hide the Magisk App, create a new app name, and select apps to hide root from (e.g., Google Play Services, banking apps).

  2. Install SafetyNet Fix: Download the Universal SafetyNet Fix module from GitHub, flash it via Magisk, and reboot.

  3. Clear App Data: For affected apps, go to Settings > Apps > [App Name] > Storage > Clear Data.

Note: Some users report RCS messaging issues after rooting. Consider using KernelSU instead of Magisk for better compatibility, following the same patching process.

How to Unroot Motorola Razr Ultra

If you want to restore your Razr Ultra to its stock state, unrooting can be done via Magisk or by flashing stock firmware.

Method 1: Unroot Using Magisk

  1. Open Magisk App: Launch the Magisk app on your Razr Ultra.

  2. Uninstall Magisk: Tap Uninstall Magisk > Complete Uninstall. Confirm, and your device will remove root access and reboot.

  3. Verify Unroot: Use a Root Checker app to confirm root is removed.

Method 2: Flash Stock Firmware

Flashing stock firmware fully restores your device but wipes all data.

  1. Download Stock Firmware: Use Motorola Rescue and Smart Assistant to download the stock firmware for your Razr Ultra, matching your firmware version.

  2. Boot into Fastboot Mode: Power off, then hold Power + Volume Down.

  3. Flash Firmware: Open Rescue and Smart Assistant, select Rescue, and follow prompts to flash the stock firmware. Alternatively, use fastboot commands:

    • fastboot flash --slot=all boot boot.img

    • fastboot flash --slot=all init_boot init_boot.imgUse the original, unpatched boot.img and init_boot.img from Step 2.

  4. Reboot Device: Run fastboot reboot to boot into the stock, unrooted state.

Note: To relock the bootloader (optional), boot into Fastboot mode and run fastboot oem lock. This wipes your device again and may not restore all features if the warranty was voided.

Risks and Considerations

  • Warranty Void: Unlocking the bootloader typically voids your warranty, depending on your region.

  • Data Loss: Unlocking and flashing firmware wipes your device, so back up everything.

  • App Compatibility: Rooting may break apps like Google Wallet or RCS messaging unless mitigated with SafetyNet fixes or KernelSU.

  • Bricking Risk: Incorrect flashing can soft-brick (boot loop) or hard-brick (unresponsive) your device. If bricked, flash stock firmware via Rescue and Smart Assistant.

  • Firmware Challenges: Ensure the firmware matches your device’s region (e.g., Retapac for Asia/Pacific) to avoid issues.

Tips for Success

  • Backup EFS Partition: After rooting, use Magisk to back up your EFS partition (containing your IMEI) and store it securely.

  • Verify Firmware: Double-check the firmware version to avoid boot loops.

  • Join Communities: Check XDA Forums or Reddit’s r/motorola for Razr Ultra-specific rooting tips and custom ROMs.

Conclusion

Rooting your Motorola Razr Ultra (2025) unlocks a world of customization, from custom ROMs to performance tweaks. This guide ensures you can safely root using Magisk v26.4 and unroot if needed, whether to restore stock firmware or prepare for a warranty claim. Use trusted sources like Motorola’s Rescue and Smart Assistant for firmware and Magisk’s GitHub for tools. For the latest rooting advice, visit XDA Forums or Reddit’s Motorola community.

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