How to Unlock Jazz MF673 & Change Its IMEI (Firmware Method)

If you're looking to unlock the Jazz MF673 4G device and change its IMEI, this guide will walk you through the safest and most reliable method — via firmware update using test points. Whether you're a technician or an enthusiast, this step-by-step process will help you gain full control over your device.

⚠️ Disclaimer: Modifying IMEI numbers may be illegal in your country. This post is for educational purposes only. Always check your local laws and regulations before proceeding.

🔧 What You Need

Before you begin, make sure you have the following:

1. A Windows PC

2. USB cable

3. Firmware file (Download link provided below)

4. QPST or similar Qualcomm flashing tool

5. Access to the device’s test point

6. A steady hand and patience!

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📍 Locating the Test Point

To enable flashing mode, you need to short the test points located near the memory card slot on the Jazz MF673.

1. Open the back cover of your Jazz MF673 device.
   
   
   
2. Look closely near the microSD card slot — you'll find two small contact points. These are the test points.
3. Use a metal tweezer or conductor to short these two points while plugging the device into your PC. This will force it into EDL (Emergency Download Mode).

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💾 Flashing the Firmware

1. Install Qualcomm USB Drivers on your PC (if not already installed).

2. Open QPST/QFIL Tool.

3. Select Flat Build or Firehose Programmer depending on the tool you're using.

4. Load the firmware provided in the link below.

5. Click Download/Flash and wait for the process to complete.

6. Once the firmware is installed, your device will reboot.

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🆔 Changing the IMEI

After the firmware update:

1. Install a Qualcomm IMEI tool (use at your own risk).

2. Connect the device (it should be detected under the diagnostic port).

3. Enter the new IMEI number and write it to the device.

4. Reboot the device.

Note: IMEI tools often require root or special access. Be sure you understand the tool you're using.

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✅ Conclusion

Unlocking and changing the IMEI of your Jazz MF673 using the firmware update method is a reliable process if you follow the steps carefully. Always use these methods responsibly and ensure you stay compliant with your local laws.

If you have any questions or issues during the process, feel free to leave a comment or contact us directly.

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Would you like help preparing the firmware files into a downloadable ZIP or creating diagrams to show the test point location?

📥 Download Firmware & Tools

File Password: pakistan