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How to Unlock the OPPO A3S Bootloader With Simply Command Prompt

How to Unlock the OPPO A3S Bootloader With Help of Windows PC...

How to Unlock the OPPO A3S 2019 Bootloader - The Unlock Bootloader procession the Oppo device must be done if you want to get Root access on your Oppo A3s phone, so for those who will root the Oppo cellphone, please read the tutorial further.

In general, there are two types of Android devices, namely devices that can be opened by the bootloader and those that cannot. All depends on the smartphone manufacturer, model. But it is known that some manufacturers still do not give permission to users to be able to open their device's bootloader.


How to easily unlock the OPPO Bootloader


This method can you apply to all Oppo devices, both F, A, R and other series that are clear, everything can be tried.

Stage 1: Prepare Equipment

To open or Unlock Bootloader you have to use a computer or laptop, please first prepare the necessary materials below.

  1. Prepare a computer, whether it's a PC / laptop.
  2. Set up a Data / USB Cable.
  3. Download ADB and Fastboot Tools then extract the file (how to right-click the file and then select Extract Here).
  4. Download the Oppo USB Driver then install it on your laptop / PC.

Stage 2: Developer Options

The second step that you have to do is activate the USB Debugging and OEM Unlock menus, to activate the menu you must go to the Developer Options menu, see the method below 

Stage 3: The Process of Unlocking the OPPO Bootloader

  1. Open the ADB and Fastboot folder that was extracted earlier, then push and hold the Shift key on the keyboard + right-click on the folder then select Open command window here / Open PowerShell window here.
  2. Then the ADB Command Line will open, it looks like the CMD display as shown below.
  3. Then connect your cellphone to your Laptop / PC using a USB cable.
  4. Then type adb devices to check whether the cellphone is connected properly with the PC as shown below.
  5. Then type adb reboot the bootloader, HP will restart and automatically enter fast boot mode.
  6. Then type fastboot OEM unlock, if it fails or fails to try changing to use command fastboot OEM unlock-go if it works then the writing will finish.
  7. Finally, type fastboot reboot and press Enter to reboot/restart HP.
  8. Finished

  9. That's the tutorial on how to do the unlock bootloader on the oppo A3s cellphone, hope it's useful, good luck. If anyone is asked to contact us.

How to Install TWRP recovery on Oppo A3s

So, once you unlocked the bootloader of Oppo A3s, now you are eligible to install TWRP recovery on Oppo A3s. Follow the below steps to Install TWRP recovery on Oppo A3s.
  • First of all, download the TWRP image from the above in your PC.
  • Now Enable the USB debugging in your Oppo A3s by going to Settings>About Phone>Build Number(Tap on it 7 times to enable the developer option)>Developer Option>Enable USB Debugging.
  • Copy the TWRP image in the same folder where you have installed the ADB and Fastboot driver.
  • Open the Command prompt window in the same folder by holding shift and clicking the right button of your mouse.
  • Boot your device into fastboot mode. You can do it by switching off your device and then press the Volume Up button and the power button simultaneously. 
  • Connect your device to the PC with the help of USB cable and let the PC to detect your device so that it can install all the necessary drivers itself.
  • Now type this command in Command Prompt/Powershell window
  • adb devices
    This command will let you know whether your device is connected properly or not. If it is not showing your device name in the window then you have to reconnect your device and install the drivers manually.
    • Now type this command:-
    fastboot reboot bootloader
    • Now type this one:-
    fastboot flash twrp.img
    Replace the TWRP.img to the actual name of your TWRP image.
    • Once the installation process is completed. You can type this command to reboot your device:-
    fastboot reboot
    • Now you have successfully installed the TWRP image on your device. Now you are ready to flash SuperSu zip.

How to Root Oppo A3s with the help of SuperSu


If you are reading the word SuperSu for the first time then let me tell you that it is a file basically a zip file by chainfire which can be installed on any android device via TWRP or CWM recovery and once it is installed successfully your device will be Rooted.
  • So, first of all, download the Latest SuperSu and paste it in the root of your SD Card.
  • Now, Switch off your device and boot your device into custom recovery by pressing and holding volume up button + power button simultaneously.
  • Now if you have TWRP installed then a screen will open something like this:-
Root Lg Q Stylus and Install TWRP Recovery
  • Now, you have to tap on the install button then browse the location where you have pasted the SuperSu and then select the SuperSu file and then Swipe right to start the installation process. Look at the image for reference.
Root Lg Q Stylus and Install TWRP Recovery
  • Wait and once it is done reboot your device.
  • DONE!

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