Redmi 12 No Service Fix Stable Working Solution

Deepak Potalwad
Dec 3, 2025

Redmi 12 No Service Fix Stable Working Solution

Redmi 12 No Service Fix: Complete Working Solution

Introduction
If you're dealing with the frustrating "No Service" issue on your Redmi 12 (Fire) device, you're not alone. This common problem has left many users unable to connect to mobile networks, even when traditional repair tools like DFT Pro fail to resolve it. Today, we're sharing a proven method that has successfully restored network connectivity to multiple devices in our workshop. This comprehensive solution addresses the root cause of the issue by repairing corrupted network data and IMEI settings, bringing your device back to full functionality.

Redmi 12 No Service Fix: Complete Working Solution

What's New in This Solution

Unlike previous methods that often provided temporary fixes, this approach combines multiple techniques to ensure a stable, long-lasting solution. The process leverages the latest V14.0.12.0.TMXMIXM MIUI 14 Stable ROM, which includes improved network stack components specifically designed to address connectivity issues that plagued earlier versions.

Key Features of This Fix

  • Complete Network Restoration: This method doesn't just mask the problem but addresses the root cause
  • Stable Results: Tested on multiple devices with consistent success rates
  • Uses Official Tools: Leverages AndroidWinTool (currently free) and official Xiaomi firmware
  • Step-by-Step Process: Clear instructions that minimize the risk of errors
  • Latest Firmware: Incorporates the most recent stable ROM (V14.0.12.0.TMXMIXM)
  • No Special Equipment: Requires only standard USB connection and computer

Understanding the Problem

The "No Service" issue on Redmi 12 (Fire) typically occurs when network configuration files become corrupted or when IMEI information is improperly registered in the system. This can happen due to:
  1. Failed OTA updates
  2. Improper flashing procedures
  3. Software conflicts
  4. Hardware detection errors
Traditional repair methods often fail because they don't address the underlying IMEI registration issues that prevent the device from properly authenticating with network providers.

Version Comparison: What's Changed

Previous solutions for the Redmi 12 No Service issue often involved:

  • Temporary network resets that would fail after restart
  • Complex engineering mode procedures requiring technical expertise
  • Risky third-party tools that could potentially damage the device
  • Inconsistent results across different devices

This new approach:

  • Uses the latest stable ROM with improved network components
  • Incorporates a free version of AndroidWinTool (previously requiring activation)
  • Provides a more systematic approach with clearer steps
  • Has been tested extensively across multiple devices
  • Offers a more permanent solution rather than a temporary fix

Step-by-Step Fix Guide

Step 1: Flash ENG ROM

First, you'll need to prepare the device by flashing an Engineering ROM:
  1. Download the ENG firmware for Redmi 12 (Fire)
  2. Use your preferred flashing tool (Mi Flash or similar)
  3. Select "Format + Download" option
  4. Start the flashing process
  5. Wait for completion
This step clears corrupted network data and prepares the phone for IMEI repair.

Step 2: Use AndroidWinTool

AndroidWinTool is currently available for free without activation requirements:
  1. Download and install AndroidWinTool on your computer
  2. Connect your device to the computer
  3. Launch the application
Important Note: Follow this procedure carefully as any mistake can cause data loss or other issues. Only proceed if you understand the risks involved.

Step 3: Access Xiaomi Settings

Within AndroidWinTool:
  1. Navigate to the XIAOMI section
  2. Select XIAOMI CPID
  3. This will open the IMEI repair interface

Step 4: Repair the IMEI

Now you'll restore the proper IMEI information:
  1. Enter the correct IMEI number (found on the device box or under the battery)
  2. Click "Start Repair IMEI"
  3. Wait for the success confirmation message
  4. Close the tool once the repair is complete

Step 5: Flash Official ROM

Finally, restore the device to its official state:
  1. Put the phone in Fastboot Mode
  2. Download the official stock ROM: fire_global_images_V14.0.12.0.TMXMIXM_13.0
  3. Flash the ROM using Mi Flash or similar tool
  4. Wait for the process to complete

Final Result

After completing all these steps, your Redmi 12 Fire should regain full network service. In most cases, the signal returns immediately after flashing the official ROM. This comprehensive approach addresses both the software and network configuration aspects of the problem, providing a more stable solution than previous methods.

Important Considerations

  • Always backup your data before beginning any flashing procedure
  • Ensure your device has sufficient battery charge (at least 50%)
  • Use a quality USB cable to avoid connection interruptions
  • Verify you're downloading the exact ROM matching your device model
  • In Fastboot mode, you can confirm your model code by typing fastboot getvar product in command prompt
Conclusion

This comprehensive solution for the Redmi 12 (Fire) "No Service" issue combines multiple techniques to ensure a stable, long-lasting fix. By following these steps carefully, you can restore your device's network functionality without needing to visit a service center. The method has been tested extensively and provides consistent results across multiple devices.
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