How to Flash Xiaomi Firmware Using Mi Flash Tool (Complete Guide)
Pre-Flight Checklist
Complete ALL items before proceeding. Skipping any step increases the risk of bricking your device.
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Backup all Samsung data (Samsung Cloud / Smart Switch)Odin flashing typically wipes user data. Back up contacts, messages, photos, and app data via Smart Switch.
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Battery charged above 60%Sufficient charge is essential to prevent interruption during flashing.
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Correct Samsung stock firmware downloaded (.zip or .tar.md5)Match the firmware to your exact model number AND country/carrier code. Check Settings โ About Phone.
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Samsung USB Drivers installed on PCInstall Samsung USB Drivers or Samsung Smart Switch to ensure drivers are present.
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Downloaded Odin (version 3.13.x or 3.14.x recommended)Use the version compatible with your firmware. Odin 3.14.1 works with most modern Samsung devices.
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USB Debugging enabled on the device (if possible)Settings โ Developer Options โ USB Debugging. Not strictly required but helps detection.
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OEM Unlock enabled (if re-flashing stock after custom ROM)Settings โ Developer Options โ OEM Unlock. Required if bootloader was previously unlocked.
Guide Steps
Extract the downloaded Samsung firmware ZIP. Inside you'll find one or more .tar.md5 files, typically named:
BL_xxx.tar.md5โ BootloaderAP_xxx.tar.md5โ Android Platform (main firmware)CP_xxx.tar.md5โ Radio/Modem/BasebandCSC_xxx.tar.md5โ Country/Carrier Specific CodeHOME_CSC_xxx.tar.md5โ CSC that preserves data (use instead of CSC if you want to keep data)
Power off your Samsung device completely. Then enter Download Mode using the method for your device:
- Older Samsung (physical home button): Hold
Volume Down + Home + Power - Modern Samsung (no home button, Android 9+): Hold
Volume Down + Bixby/Volume Upthen plug in USB - Samsung Galaxy A series / S20+: Hold
Volume Up + Volume Downsimultaneously while connected to USB
You'll see a blue/green warning screen. Press Volume Up to confirm and enter Download Mode. The screen shows a downloading animation.
Right-click Odin3 v3.x.exe and select "Run as administrator". Click Yes on the UAC prompt.
Connect your Samsung device (which is in Download Mode) via USB. Odin will detect it and show a blue/green COM port ID in the ID:COM box in the top-left. You'll also see "Added!!" in the log window.
Click each button in Odin and load the matching file:
- BL โ
BL_xxx.tar.md5 - AP โ
AP_xxx.tar.md5(this is the largest file) - CP โ
CP_xxx.tar.md5 - CSC โ
CSC_xxx.tar.md5(orHOME_CSCto keep data)
Click the Options tab. Recommended settings:
- โ Auto Reboot โ Device reboots automatically after flash
- โ F. Reset Time โ Resets flash timing counter
- โ Re-Partition โ Leave UNCHECKED unless specifically instructed (can brick)
Leave all other options at their defaults.
Click the Start button in Odin. The flashing process will begin. You'll see progress in the log window and a progress bar.
Flashing typically takes 3โ10 minutes. Keep your PC and phone connected and undisturbed throughout.
When complete, Odin shows PASS! in green. Your device will reboot automatically.
Once Odin shows PASS, your device reboots. The first boot optimizes apps and may display a Samsung logo for several minutes. This is completely normal.
After booting:
- Complete the initial Android setup wizard
- Restore your data from Samsung Cloud or Smart Switch
- Check Settings โ About Phone โ Software Information to verify the firmware version
Congratulations! Flash Successful!
You've successfully completed all steps. Your device should now be running the new firmware. If it's booting normally โ you're done! Check the troubleshooting section below if you encounter any issues.
Troubleshooting & FAQ
Common errors and their solutions. Read this before asking for help.
Odin FAIL can happen for several reasons:
- Wrong firmware for your model number (most common cause)
- Corrupted firmware โ re-download
- Bad USB cable or port
- Re-Partition was checked when it shouldn't be
Check the Odin log carefully โ the line just before FAIL usually identifies the exact problem.
This error usually means the CSC region doesn't match your device's stored CSC. Solution:
- Re-flash using the regular CSC (not HOME_CSC) for a full wipe
- Verify you're using firmware that matches your device's region exactly
This means Odin can see your device but can't establish a stable connection.
- Try a different USB cable (use the original Samsung cable)
- Use a USB 2.0 port instead of USB 3.0
- Reinstall Samsung USB drivers completely
This appears when flashing custom firmware on a device with an active FRP (Factory Reset Protection) account. The device won't boot until you sign in with the Google account that was previously registered. This is a security feature, not a bug. If you've lost access to that account, contact Samsung Support.
Flashing official stock firmware via Odin generally does NOT void your warranty โ Samsung service centers use Odin themselves. However, flashing custom ROMs, modified firmware, or unofficial firmware will void your warranty and may trigger the Knox security fuse (0x1), which cannot be reset.
Yes, you can flash a newer official firmware if Samsung released it for your model. However, you generally cannot downgrade to an older Android version via Odin because Samsung's bootloader has rollback protection. Also ensure your bootloader version supports the firmware being flashed.