[hovatek]

This step-by-step guide will explain how to use Qualcomm Flash Image Loader (QFIL) to backup or restore QCN to a Qualcomm Android device. QCN helps you fix NV related issues like baseband, IMEI, network detection etc.

Requirements

• Enable Diagnostic (Diag) mode on the Qualcomm device
  
• Download Qualcomm Flash Image Loader (QFIL)
  

Steps to backup or restore Qualcomm QCN using QFIL

Follow the steps below to backup or write QCN to Qualcomm Android with QFIL

See the video tutorial below or @ https://youtu.be/uiz2ymlITbA

Backing up / reading QCN

1. Connect the device to the PC via USB cord while in Diag mode
   
   
2. Launch QFIL. The device should get detected as Qualcomm HS-USB Android DIAG 90ID
   
   
   
   
   
   
3. Click Tools
   
   
   
   
   
   
4. Click QCN Backup Restore
   
   
   
   
   
   
5. The QFIL QCN backup restore dashboard should open
   
   
   
   
   
   
6. Click Backup QCN
   
   
   
   
   
   
7. Wait while QFIL extracts the device's QCN
   
   
   
   
   
   
8. You should get a Backup QCN Succeed message once completed
   
   
   
   
   
   
9. Open the QCN File path and you should find the .qcn file
   
   
   
   
   

Restoring / flashing QCN

• With the device still connected in Diag mode, click Browse
  
  
  
  
  
  
• Highlight the .qcn file and click Open
  
  
  
  
  
  
• Click Restore QCN
  
  
  
  
  
  
• Wait while QFIL restores the QCN
  
  
  
  
  
  
• You should get a Restore Succeed once done
  
  
  
  
  

Important Notice

• Diag mode is different from EDL mode, don't mix them up
  
• You may download QFIL as a standalone or QPST (which comes with QFIL and other tools
  
• If QFIL doesn't show the device as Qualcomm HS-USB Android DIAG 90ID (while connected and in Diag mode) then click Port and manually select
  
• Its important you only restore a QCN backup made from a working phone of the same model to avoid bricking
  

Video Transcript

In this video tutorial, I'll be explaining how to backup and restore QCN of a Qualcomm Android device using Qualcomm Flash Image Loader or QFIL. For you to backup or restore QCN, you need to have boot the device or enabled Diagnostic mode on the device. We have a guide on how to enable Diag mode on your Qualcomm Android device. You also need to have installed your QFIL from QPST

Now, don't forget that the QCN helps you fix NV related issues like baseband issues, IMEI issues, network detection issues and rests alright? Now once you have the device in Diag mode, you connect it to the PC while still powered on then you launch QFIL. Once QFIL comes up, you'll see the device detected as Qualcomm HS-USB Android DIAG. So now this device is in Diagnostic mode and its detected correctly.

Now, you head over to Tools, click on QCN Backup Restore. Take note of the path where your QCN file is going to get saved to. alright and then you click Backup QCN. Once you do that, you'll see the status here. Just sit back and wait while QFIL backs up the QCN file. Alright! So QCN backup is complete. I have Backup QCN Succeed. You head over to the directory (mine is Hovatek folder). I have my saved_qcn here.

Now to restore, it's the same procedure; your device in diagnostic mode but this time around, you select Browse and then you select the QCN file which you intend to restore and then you select Restore QCN. You just wait while QFIL restores the QCN to the device. Alright! So we have Restore Succeeded. At this point, you can disconnect the device, maybe reboot and do whatever you wish to do.

So that's how to backup and restore QCN on a Qualcomm Android device using QFIL or Qualcomm Flash Image Loader

[Noblex]

i followed the detailed step, but am unable to back up qcn of my inifinx x6233

the error message is in the screenshot

[Noblex]

This is the error message from the Qfil while trying to back up my phone qcn

[Noblex]

Pls someone help

[X3non]

i followed the detailed step, but am unable to back up qcn of my inifinx x6233

the error message is in the screenshot

create a new thread for your device issue
see https://www.hovatek.com/forum/thread-514.html for how to create a thread

[temmiecool]

This is the error message from the Qfil while trying to back up my phone qcn

hello, please were you able to solve this error? and how did you...cos I'm having the same problem.

[X3non]

This is the error message from the Qfil while trying to back up my phone qcn

hello, please were you able to solve this error? and how did you...cos I'm having the same problem.

create a new thread for this by clicking "ask question" at the top
in the new thread, state the device model and how you enabled diag mode