Samsung J4 J400F U9 Android 10 Root Magisk Patch J400FXXU9CUJ3

Samsung Galaxy J4 J400F Root File Download | Magisk Root Guide

Looking to root your Samsung J4 J400F? You've landed in the right place. This guide provides a clean and secure method to root the J400F using Magisk patched boot and vbmeta files. Whether you're fixing bootloop, dm-verity verification errors, or facing black screen after root, we’ve got the solution here.

Common Issues Fixed by Rooting Samsung J4 J400F

• Touch not working after root
• Stuck on Samsung logo
• Dead boot recovery
• dm-verity error / Verification failed
• Unknown baseband after flashing

Important Note: Ensure that the root files you're using match the build number of your J400F. Using an incorrect version may cause serious software issues. Also, charge your battery to at least 60% before proceeding.

🔧 Requirements Before You Begin

• Samsung USB Drivers installed on PC
• Odin Flash Tool
• Magisk patched boot.img and vbmeta.img
• Backup of your important data

📥 Download Root Files for Samsung J4 J400F

Build Version: J400FXXU9CUJ3
Root File: Download Secure Root File

📲 How to Root Samsung J4 J400F (Step-by-Step Guide)

1. Install Samsung USB drivers on your PC.
2. Extract the root files and Odin using 7Zip or WinRAR.
3. Boot your J400F into Download Mode (Power + Volume Down + Home).
4. Launch Odin and load the patched boot.img file into the AP slot.
5. Click Start and wait for the flash to complete.
6. Once done, reboot the phone and install the latest Magisk app to finish rooting.

⚠️ Disclaimer

Rooting your phone may void its warranty and will erase all user data. We are not responsible for any damage caused during the process. Always backup important data before proceeding.

📌 Need Help?

If you face any issue during rooting or flashing, drop your query in the comment section of our YouTube videos, or search your phone model on our website for full stock firmware flashing guides.