This phone has been flashed with unauthorized software and is locked fix


Phase 01: Flash COMBINATION Samsung

Check Security Patch Level

Check your security patch level from the recovery mode

Put your device into download mode to check Security path level on the top of the screen you will see

If you are trying to bypass FRP Lock using the Samsung combination file, first you have to download the Samsung combination file for your mobile. You can Download free combination files

How to Flash Samsung a800f Combination with Odin Flash Tool

We will show you how to use the Odin tool to flash the Samsung a800f with combination files, and how to bypass the Samsung FRP using the Odin tool without the downgrade Android version.

Prerequisites for Flash Samsung Combination File on  Samsung a800f

Download the Samsung combination file according to your Samsung a800f. Otherwise, you will brick your Samsung a800f.

Now if all the above files and tools are ready then go ahead and read all instructions carefully.

Enable USB debugging by flashing the combination file

Remove the downloaded Samsung combination file, if it is in zip format. [Combination file should be in .tar format] Turn off your device and boot into download mode. [Once you press the Volume Up Key alert message, press Volume Down + Home + Power Key simultaneously and press]

Plug Samsung a800f with PC via USB cable.

Run the Odin flash device as admin on PC. If the device is connected properly, You will see “added” in the Odin tool window. Navigate to the “Options” tab and configure the tool.

Click on “AP” or “PDA” and browse the Samsung Combination .tar file and wait for it to load.

Finally hit the “Start” button to start the combination file flashing process.

The end of successful Flash, you can see the green “pass” message on the screen.

Now the phone will reboot automatically and boot into factory binary mode as shown below.

After the full reboot, the screen of the Samsung a800f device will have some menu and settings open “Settings” enables USB debugging and OEM to unlock from the developer option.


Turn the device off again and go to the second step.

Phase 02 – Flash Official Samsung Firmware on Samsung a800f

After flashing the Combination files on the locked Samsung a800f, this will unlock OEM lock and USB debugging. So now you are ready to flash official stock ROM to remove Samsung factory reset security. Note: Make sure that you have downloaded the correct official firmware for your device.

Do not flash non-supported firmware

Turn off the device again and boot into the download mode again using key combinations.

[After watching the warning message, press Volume Down + Home + Power Key and press Volume Up Key to boot in Download Mode or Odin Mode].

Unplug it and insert the USB cable again.

Now click on AP and browse AP file with full firmware. If there are many files in the firmware then browse the “BL” file, “AP” file, “CP” file and “CSC” file one by one

Hit the “Start” button again and then flash the official firmware device.

After completing the process, the phone will reboot again and you can remove the USB cable. The device will take a few minutes to update all the software on the device. Sit back and wait for the reboot automatically.

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