Print Created by: Shay Golan

 To install the secure OS on your device

  1. Download the Device image latest version from the below location
    (make sure to choose the right directory based on your phone type):
    Device images  


(Just select the relevant folder and click the download button at the top )

  1. Download the flashing tool: Windows_Kburner_for_ Android10
    The installation files and drivers are for Windows 10 PC only
  2. Make sure that you have “Standard USB to USB type C” cable (like in the picture below):


Prepare the device for flashing

  • Enable OEM Unlocking (do it on all the devices)
  1. Turn on the device, connect to WIFI, go to settings -> system -> about phone -> press 7 times on “Build number” until you see a massage “you are now a developer”.
  2. Go back one step -> system /advanced/developer options -> enable “OEM unlocking” option.
    • Switch the device to fastboot mode (just before the flashing) 

    1. Click the power button and select restart
      1. Immediately press and hold the volume down button until the device in fastboot
      2. Connect the device to your PC.


Flashing process 

    1. During the Flashing process keep the device connected to the PC at all times
    2. You will be asked to accept Unlocking / locking the device bootloader
       to do so you will use the volume up and down buttons to switch between options, and the power button to select (OK)





Kburner Tool 

  • The flashing of the devices will be done using “Windows_Kburner_for_ Android10” .
     the tool runs on Windows10 on PC only with Standard USB ports.
  • It is possible to run multiple flashing  simultaneously (up to 5 device) using USB hub and 5 USB cables (Standard USB to Type C USB)
  • It is only possible to flash multiple devices from the same type. (not possible to flash more then one device type at once)
  • Follow the steps below to flash the devices.

Step 1 - connect the devices to the PC which they are in Fastboot mode

Step 2 -  Unzip the Kburner tool and run it 

Step 3 - select the type of device you plan to flash (for example Pixel3a/3aXL)

Step 4 – select the Image zip file for the device you wish to flash
(for example “”) and click Open.
on the first run the KBurner will unzip the file to a directory with the same name. (this step will be skipped once the directory will be already on the same location of the zip file)

Step 5 – the Kburner will report the amount and type of devices in fastboot mode, which was recognized connected to the PC. (example1). If the amount and type of detected devices are correct click “OK”.
.  Pay attention for the following exception

  • No Device was detected – issue is either USB cable /USB port on the PC / device not in fastboot/ PC
    change USB port/USB cable, make sure the device is in fastboot and click “try again”
    if this not help, restart the PC and repeat from step 1
  • Device type detected is not compatible with the image file selected in step2, or more then one type of devices was detected . check the devices connected and make sure only the requested device is connected


Step 6 – starting the flashing process. The Kburner will send command to the device to unlock the bootloader.
in each device you will need to manually approve unlocking the bootloader by clicking one click on the volume up button (to select “unlock the bootloader”) and then one click the power button (to approve selection)

Upon approving unlocking the bootloader, the flashing will begin and several images will be flashed to the device. The flashing steps can take several minutes (up to 15 minute), the kburner and the device will change mode several times, That is a normal and you should keep the devices connected at all times.
 We recommend leaving the device aside until you are requested to lock the bootloader to finish the flashing process.


Step 7 – at the end of flashing the kburner will send a command to lock the bootloader.
In each device you will need to manually approve locking the bootloader by clicking one click on the volume up button (to select “lock the bootloader”) and then one click the power button (to approve selection)


Step 8 – after Locking the bootloader keep the device connected until the Kburner report the flashing was successfully


S Shay is the author of this solution article.