These are instructions on Flash Stock ROM on Android Devices using Broadcom Download Firmware Utility (DFU).
Requirements: Your Android Smartphone should have at least 40-50 percent of battery to perform the Flashing Process.
Flash stock ROM using Broadcom Download Firmware utility
1-Download the Broadcom USB driver for your device and install it on your Windows computer. If you have already installed USB drivers for your device, then skip this step.
2– Download the Broadcom Firmware Download utility and download it to your computer. After extracting, you will see the following files.
3-Power Off your Android Device.
4-Download the stock ROM you want to flash on your Android device and extract it to your computer.
5-Now open dfu.exe (You extracted this file on your computer in step 2.
6-Once the Broadcom Firmware Download utility has started, click on the Browse button at the top right corner and locate the Firmware folder.
7- Once you have successfully found a DFU compatible firmware folder, it will automatically appear in the DFU (Broadcom Download Firmware) tool.
8- After the firmware has been successfully added to the DFU tool, tap on the download menu.
9- Now click on the Start button to start flashing.
10-Now connect your Android smartphone based on Broadcom chipset to your computer (make sure it is turned off)
11-After connecting your device to the computer, press the volume down button on your device so that the Firmware Download Utility (DFU) can be detected.
12-As soon as the Broadcom Download Firmware (DFU) utility detects your device, the flash process will start automatically
13-When flashing is complete, a Finish message is displayed
14-Now close Broadcom Firmware Download Application and disconnect your Android device from the computer.
Congratulations, the stock ROM you downloaded is now running successfully on your Android device.