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• June 11, 2025
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If your Xiaomi Civi 4 Pro is stuck in a bootloop, shows “Invalid IMEI,” or has no network, you can recover it yourself by flashing official firmware and restoring the IMEI using Qualcomm tools.

What Is Stock Firmware?

Stock Firmware (Fastboot ROM) is Xiaomi’s official operating system image. Flashing it:

• Fixes boot and soft-brick issues
• Restores missing or corrupted system files
• Removes root (Magisk), custom ROMs, or mods
• Resolves IMEI and mobile network problems
• Enhances system stability and performance

When to Flash Your Xiaomi Civi 4 Pro

Flash your device if:

• It’s stuck on the MI logo or in a bootloop
• Shows “Invalid IMEI”, “No SIM”, or “No Network”
• Is crashing or acting unstable
• You want to unroot or remove a custom ROM
• You need to downgrade to an older version of MIUI

What You Need

• Official Fastboot ROM (.tgz) for Xiaomi Civi 4 Pro
• Mi Flash Tool (latest version)
• Xiaomi USB Drivers
• Windows PC + USB-C cable
• Unlocked bootloader
• Full data & IMEI backup (QCN) — flashing wipes everything

Flashing Firmware – Step-by-Step

Step 1: Download Firmware

• Get the Fastboot ROM (.tgz) for Xiaomi Civi 4 Pro
• Extract it — ensure the folder contains an images directory

Step 2: Install Drivers & Tools

• Install Xiaomi USB Drivers
• Install and open Mi Flash Tool

Step 3: Enter Fastboot Mode

• Power off the phone
• Hold Volume Down + Power until Fastboot screen appears
• Connect phone to your PC via USB

Step 4: Flash the ROM

• In Mi Flash Tool:
  • Click Select, and choose the extracted ROM folder
  • At the bottom, choose “clean all”
  • Click Flash
• Wait 5–10 minutes. The device will auto-reboot after successful flashing

How to Repair IMEI on Xiaomi Civi 4 Pro

The Snapdragon 8s Gen 3 uses Qualcomm’s QCN/DIAG interface for IMEI repair.

Important: Restore only your original IMEI (from SIM tray or box). Changing IMEI is illegal in most countries.

Tools Required:

• QPST Tool (Qualcomm Product Support Tools)
• QCN Backup (from your device or a matching model)

Step-by-Step:

1. Enable DIAG Mode
   • Enable Developer Options > USB Debugging
   • Connect to PC, then run: bashCopyEditadb shell setprop sys.usb.config diag,adb
2. Open QPST Configuration
   • Ensure your phone appears with a COM port under “Ports” tab
3. Restore IMEI via QCN
   • In QPST > Software Download > Restore
   • Load your QCN backup
   • Click Start to write QCN to the device
4. Reboot & Confirm
   • Reboot the phone
   • Dial *#06# or check Settings > About Phone to verify IMEI

Common Issues & Solutions

Issue	Solution
Device not detected	Reinstall USB drivers or try another port/cable
Mi Flash fails or freezes	Use another Mi Flash version or check firmware folder
QPST not detecting device	Re-enable DIAG mode or try a different COM port
IMEI still missing	Use a correct QCN file + verify DIAG mode is active
Bootloop after flash	Boot into Recovery > Wipe Data

Flashing Tips

• Use Fastboot ROM (.tgz) only — Recovery ROM (.zip) won’t work in Mi Flash
• Make sure your ROM is for Xiaomi Civi 4 Pro (China variant)
• Don’t relock the bootloader unless flashing official firmware
• Ensure the battery is charged above 50%
• Back up all personal data and IMEI (QCN file) before flashing