How to Flash HTC Desire 820 (820MU) dual sim by using Fastboot code ? (Tested)

Are you stuck with your HTC Desire 820 (820MU) dual SIM, and looking for a tested and reliable way to flash it? This comprehensive guide walks you through the process of flashing your device using Fastboot commands. Whether you're troubleshooting software issues, removing a persistent boot loop, or restoring the stock ROM, this guide has you covered.

Why Flashing HTC Desire 820 (820MU) Might Be Necessary

Flashing your HTC Desire 820 allows you to:

1. Restore the device to factory settings.
2. Fix boot loop or software issues.
3. Remove malware or corrupted software.
4. Install the stock ROM to unbrick your device.

Let’s get started!

Pre-Requisites

To ensure a smooth flashing process, gather the following:

• HTC Desire 820 (820MU) dual SIM with a well-charged battery (at least 70%).
• Tested HTC Desire 820 (820MU) Stock ROM Firmware.
• HTC Fastboot Driver SPL. - Use ADB Driver
• HTX Multi Tool for HTC devices.
• A good quality micro USB cable.
• A computer or laptop (Windows OS recommended).
• WinRAR or another unzipping tool.

Procedure to Flash HTC Desire 820 (820MU) Dual SIM

Step 1: Download and Prepare Files

1. Download the required files from trusted sources. If links are broken, feel free to leave a comment below, and I’ll assist.
2. Install WinRAR on your PC if it’s not already installed.
3. Extract the downloaded files to your desktop or any convenient path using WinRAR.

Step 2: Install Drivers

1. Install the HTC USB (Flashing) Driver on your computer. If already installed, skip this step.
2. Restart your PC to ensure proper driver setup.

Step 3: Prepare the Device

1. Unplug the battery socket, wait for a few seconds, and reinsert it.
2. Press and hold Volume Down + Power button to boot into Fastboot mode.
3. Connect your device to the computer using a micro USB cable.

Step 4: Set Up HTX Multi Tool

1. Navigate to the extracted folder and open the HTX Multi Tool.exe file.
2. Go to the Fastboot tab in the tool.
3. Click on the Read Boot Info button and wait for the tool to gather device information.

Step 5: Verify Device Model

• Ensure the detected model matches the HTC Desire 820 (820MU).
• If the model is different, note the details and share them in the comment section for assistance in finding the correct stock ROM firmware.

Step 6: Rename and Copy Stock ROM Firmware

1. Rename the downloaded firmware to 0PE6IMG.zip.
2. Copy this file to the htc fastboot driver spl folder.

Step 7: Open Command Prompt

1. Open the folder containing the fastboot files.
2. Hold the Shift key, right-click on a blank area, and choose Open Command Window Here.

Fastboot Commands to Flash the Device

1. Verify Device Connection:

   fastboot devices
   

   • This command lists all connected devices. Ensure your device appears here.

2. Reboot to RUU Mode:

   fastboot oem rebootRUU
   

3. Flash the Firmware:

   fastboot flash zip 0PE6IMG.zip
   

   • Wait for the flashing process to complete.

4. Reboot the Device:

   fastboot reboot

Troubleshooting Tips

• Device Not Recognized: Ensure drivers are properly installed and use a different USB cable or port.
• Flashing Error: Double-check the firmware file name and ensure it matches the required format (0PE6IMG.zip).
• Low Battery: Charge the device to at least 70% before starting the process.

Conclusion

Congratulations! You’ve successfully flashed the HTC Desire 820 (820MU) dual SIM using Fastboot commands. This process restores your device to factory settings with a fresh stock ROM. If you encounter issues or have additional questions, drop a comment below.

Remember to handle the flashing process carefully to avoid errors or device bricking. Good luck!