These are the instructions to Flash Stock Rom on Android Devices using Phoenix USB Pro.
Requirements: Your Android Smartphone should have at-least 40-50 percent of battery to perform the Flashing Process.
Step 1: Download and install the Android USB Driver for your device on your Windows Computer. In case you have already installed the USB drivers for your Device then SKIP this step.
Step 2: Download and extract Phoenix Pro on your computer. After Extracting you will be able to see the following files:
Step 4: Power Off your Android Device.
Step 4: Download the Stock Rom that you want to Flash on your Android Device and extract it on your Computer.
Step 5: Now, open PhoenixUSBPro.exe (you have extracted this file in Step#2) on Your Computer.
Step 6: Once Phoenix USB Pro is launched, Click on the Key Button from the Top and select the key file that comes with the Phoenix Pro.
Step 7: Now, Click on the Image button Locate the .img firmware (you will find this file in the Stock Rom you have downloaded).
Step 8: Now, Click on Start button.
Step 9: Now, you will be able to see a Big Green Tick Mark on the left which means everything is ready to flash the firmware.
Step 10: Now, hold Volume Down key and connect your Android Device to the Computer using the USB cable.
Step 11: Now While holding the Volume Key, Tap on the Power Buttons 3 times then release the Volume Down Key.
Step 12: Once Phoenix Pro will detect your device, the Flashing process will begin automatically.
Step 13: Once Flashing is completed, a Finish message will appear.
Step 14: Now, close Phoenix USB Pro application and disconnect your Android Device from the computer.
Congratulations, Now your Android Device is successfully running the Stock Rom you have Downloaded.
[*] The above tutorial only works with the firmware that comes in .img format only.
[*] Take Backup: Take a Phone backup before using the Phoenix USB Pro as because during the flashing process your personal data will be removed.