This is what you need to to do to use the Qualcomm Flash Image Loader (QFIL) tool so you can flash stock firmware flash files on a smartphone that has a Qualcomm branded system chip.

You should have no problem using this flashing tool on all devices with Qualcomm system chips, regardless of the manufacturer of the device.

The Qualcomm Flash Image Loader (QFIL) is a tool that’s capable of flashing firmware files on smartphones and tablets that have a Qualcomm branded system chip sitting inside the hardware.

There are a few good options out there when it comes to flashing tools for Qualcomm processors, but QFIL is probably the one that is used most by Android enthusiasts.

Sometimes you can come across flashing tools that only work for the one manufacturer of smartphones. For example, the Odin flashing tool was made by repair centers to be used for Samsung devices only, regardless of the system chips. Then there are other tools like the Qualcomm Flash Image Loader (QFIL) that will work no matter what manufacturer the smartphone is coming from so long as it has a Qualcomm system chip inside.

The first step in the guide is to get the Qualcomm USB driver installed on the computer that you’re using. This is so that the flashing tool and Windows software can communicate with the hardware and devices that you’re connecting.

You might find that there are several versions of the tool made available on the Web. A general rule of thumb is always to download the latest version, which is typically signified by a higher version number. This is because the newer versions of flashing tool are made to be compatible with more devices, compatible with more software versions, and probably have fixed a few bugs along the way, too.

How to use Qualcomm Flash Image Loader (QFIL)

1. Install the latest version of the Qualcomm USB driver (Universal ADB driver listed on the page) on the same computer that you plan on using for the installation of the flashing tool.

2. Download the latest version of the Qualcomm Flash Image Loader (QFIL) file on the computer and then extract the file by right-clicking on it and choosing “Extract” from the menu.

3. Open the Qualcomm Flash Image Loader (QFIL) folder and then double-click on the QFIL application so that the flashing tool launches. (It’s the file with the green icon.)

4. Turn off the smartphone that you want to flash and hold the Volume Up key and connect it to the computer with the USB cable.

5. Click on the “Browse” button from the QFIL interface and upload the firmware file that you’re looking to flash to this location. (This is often the file with the “.mbn” extension at the end.)

6. Give QFIl a few seconds to load the rest of the data automatically.

7. Click on the “Download” button, and the flashing will begin.

Note: Firmware files can be quite large and subsequently it’s not unusual for the flashing to take 10 minutes or sometimes even longer. You know the firmware is flashed when the device reboots for the last time.

Take Into Account:

  • If you don’t see the “Download” button, it’s probably because your device is not yet connected to the computer. The flashing only becomes possible if the tool detects a device. 
  • The Qualcomm Flash Image Loader is only compatible with the Windows operating system. You can use it on anything ranging from Windows XP through to Windows 10. Newer versions of Windows will also become compatible, but you may need to download an updated version of the tool. 
  • Flashing firmware files with flashing tools will result in lost applications and contacts if they are not backed up first. You should backup as much data as you can before flashing: use free applications such as Helium from Google Play, transfer files to the computer, use cloud storage, whatever it takes to be safe. 
  • The Qualcomm Flash Image Loader tool is made by the official Qualcomm brand.