š ️ Experiencing software crashes, boot logo hang, or a completely dead screen on your Samsung Galaxy J400F? If your device is stuck or acting strange, you're in the right place! This page contains the essential tools and AutoPatch firmware you need to restore your Samsung J400F to working condition — safely and effectively.
š Read Before Flashing
Installing stock or patched firmware manually on Samsung J400F may void your warranty and erase personal data. Proceed carefully and make sure you understand each step before starting the process.
š” Common Issues Fixed by This Firmware
- š“ Device stuck on Samsung logo or bootloop
- ⚫ Black screen after flashing
- šµ Touch not working after software update
- š Auto rebooting or random restarts
- š dm-verity verification failed error
- š Security policy or OS corrupt message
š„ Download Samsung J400F Firmware – AutoPatch U8 (Android 10)
Password: khizarmobile
š ️ Tools You Need for Flashing
- š Samsung J400F AutoPatch Firmware (link above)
- š Samsung USB Drivers
- ⚙️ ODIN Flash Tool (latest version recommended)
š Flashing Instructions (Short Guide)
- š Fully charge your phone or keep it above 60%
- š„ Download and extract the firmware ZIP (password-protected)
- š Boot the device into Download Mode (Volume Down + Home + Power)
- š» Open Odin, connect your device via USB
- š Load the AP file and click "Start" to flash
- ✅ Wait until Odin shows "PASS" and your phone restarts
š¬ Need Help or Made a Mistake?
Don’t panic! If flashing didn’t go as planned or the device still doesn’t work, search your phone model on our website and follow the troubleshooting guide provided. You can also ask for help in the comment section of our related YouTube videos.
✅ Make sure you flash the correct firmware according to your model and software version. A mismatch can cause serious issues. Flash safely and bring your Samsung J400F back to life! š