Oppo A3S ODM CPH1853_11_A.21 Official Stock Firmware ROM (Flash File)

Download Oppo A3S ODM CPH1853 latest Official Stock Firmware ROM (Flash File) + Official Flash Tool from this page. This file helps to unbrick Qualcomm HS-USB Qdloader 9006 9008, fixes Bootloop, fixes hang on logo and also helps to remove Userlock, Pattern Lock, Usercode, FRP, PIN, Password.

Requirements to Flash:

  • PC or Laptop
  • Flash Tool
  • Oppo A3S ODM CPH1853 Stock Firmware ROM (Flash File)
  • High speed USB Data Cable
  • USB Drivers
  • Knowledge to read carefully and proper use of Tools.
  • Patience

Read me First:

  • This Stock Firmware ROM (Flash File) only works for the listed device.
  • Make sure you are on the correct page to download the Exact Firmware for the device you have in hand.
  • Given Stock Firmware ROM will erase all your data on the phone. Please make sure you have taken backup of your device if possible.
  • Make sure you have atleast 50% or more battery backup while flashing as sometimes the device may lose power and create errors while flashing.
  • Doctorfirmware is not responsible for any damage of your device, as the device may Bootloop, becomes dead or damage SD cards which may be problem of EMMC or internal storage.
  • Backup NVram using any Professional Tools as after flashing the device may loose Nvram data (if damaged before) and may give problems on Baseband and IMEI.

Phone Specifications:

Brand Name Oppo Mobile
Model Name Oppo A3S ODM CPH1853
CPU Qualcomm Snapdragon 450
Version Android 8.1 Oreo
RAM 2 GB , 3 GB or 4 GB
ROM 16 GB, 32 GB or 64 GB

Stock Firmware ROM (Flash File) Details:

Brand Name Oppo Mobile
Model Name Oppo A3S ODM CPH1853
CPU Qualcomm Snapdragon 450
ROM Version Android 8.1 Oreo
File Size 4.5 GB

Download Oppo Oppo A3S ODM CPH1853_11_A.21 Official Stock Firmware ROM (Flash File).

Here is the download link for Oppo A3S ODM CPH1853_11_A.21 Official Stock Firmware ROM ( Flash File). To download the firmware click on the download link below. It will open a new Tab. Wait for 5 seconds and Skip the ad which will redirect you to the download page. Download Links : Link 1 (Mshare) Link 2 (Android File Host)

Mshare - Download link 1


         - Download Link 2

How To flash Qualcomm Oppo Devices?

Here is step by step tutorial on how to flash any Qualcomm Oppo Devices.
  • Download Oppo Official Stock Firmware ROM (Flash File) and Oppo Official Flash Tool.
  • Download and install USB Drivers for your mobile phone.
  • Extract the Oppo Firmware and Tool.
  • Oppo Flash Tool is usually placed in the Firmware folder already, if not you have to copy the Oppo Flash Tool on you Firmware folder.
  • Open or Launch Oppo Flash Tool.
  • Tool requires Authorised Oppo ID and Password. Enter the Oppo ID and Password on the tool.
  • Turn Off your Oppo phone.
  • Press and hold Volume Up (Vol +) and Volume Down (Vol-) and insert USB cable on your mobile phone.
  • The device should be recognised as Qualcomm HS-USB Qdloader in the device manager.
  • Open the Oppo Flash Tool and see if the device is connected or not.
  • Click on Start button and do not interrupt until it says Download Success or Flashing is passed.
  • After the Oppo Flash Tool says Download Success, remove USB from the device and turn on the phone.
  • Happy Flashing!!!