Oppo Realme 3 RMX1821 Firmware

Oppo user now Download Oppo Realme 3 RMX1821 Firmware with Oppo Tool and Realme 3 USB Driver. IF you are trying to install the latest Oppo Stock ROM on your Device but facing errors, then this guide will help you to rid out problems.

If you are trying to fix Oppo Realme 3 RMX1821 Bootloop, bricking your smartphone, want to repair dead boot, optimizing Device speed, then the solution is only to flash oppo Realme 3 RMX1821 with the latest Oppo Stock ROM.

Oppo Firmware’s official firmware website provides you the latest Oppo Flash File, USB Drivers, and Oppo Flash Tool with how to flash guide.

Firmware Oppo Realme 3 RMX1821 Details

Smartphone Name Realme 3
Model Name RMX1821
Product Name Oppo
Android OS version Color OS 7 Android 10
Supported Tool SP Flash Tool
Hardware info MediaTek MT6771 Helio P60
Stock ROM version RMX1821EX_11_A.25 (Latest)







Oppo RMX1821 Stock ROM advantages

Oppo Stock ROM is the pre-built operating system when the device launches. You can get remarkable advantages by installing Oppo Realme 3 Stock ROM, as described below.

  • Upgrade or downgrade Oppo Realme 3 RMX1821.
  • You can fix boot loop, dead boot with Realme 3 Firmware.
  • Solve to unbrick your Oppo Realme 3 bricked.
  • UnRoot your Rooted Oppo Smartphone device.
  • Remove Oppo Screen lock, Pin, or Pattern lock.
  • Optimize Android Apps with the latest Oppo Firmware.
  • Remove bugs, lags, and malware with Realme 3 Firmware.
  • Stock ROM will help you to solve invalid IMEI, baseband, Wifi, or Bluetooth address.

How to Install Firmware Oppo Realme 3 RMX1821

Updating Realme 3 RMX1821 software is the most sensitive process, and you should have to pay attention to following steps below

Download Oppo Flash Tool

Every Android Device comes with different hardware specifications; that’s why different Flash Tool used to flash the smartphone. You can use the following Oppo Tool for Realme 3 RMX1821.


Finally, we are going to start the Flashing process. So first, prepare your Oppo Device. Remember the below essential points before trying to flash your Oppo Device.

  1. Download Oppo Realme 3 USB Driver and install it into your PC/Laptop.
  2. Match the exact information of the Device and downloaded Oppo Firmware.
  3. Make sure the Oppo Device battery at least 50% charged.
  4. Make a backup of your Device personal data and move to a safe drive.
  5. Don,t try to flash Oppo Realme 3 Firmware to another Device.

Flash Firmware at own Risk, Oppo Firmware team will not be responsible if any internal or external issue comes after Flashing Firmware

Official Method: Install Oppo Stock ROM via Recovery Mode

Installing Oppo Realme 3 RMX1821 Firmware via OTA or Recovery Mode is the proper method. With OTA update, follow the below steps.

  • Download Stock ROM for Realme 3.
  • Transfer the downloaded Firmware into SD Drive or Phone internal Storage.
  • Insert SD card into Phone
  • Power ON Smartphone into Recovery Mode
  • Hold and Press Volume -, and Power ON key together
  • when the Realme logo appears to release all keys
  • Select Recovery Version
  • Update via OTA by selecting file path
  • Press Update and wait it will take some time
  • Press restart when the ROM installs successfully.

Method 2: Flash Oppo Firmware Realme 3 via SP Tool

  • First of all, download and extract the recommended File, Flash Tool, and USB Drivers.
  • Open SP Flash Tool
  • Choose Scatter-loading and select the scatter firmware located into downloaded Oppo Firmware Folder.
  • Connect Oppo Mobile with PC/Laptop.
  • Press Download and wait it will take some time
  • Flash process complete in some time.

So, It’s all about Software update Oppo Realme 3 RMX1821 with Oppo Flash Tool. We hope this tutorial will lead you to Flash Oppo Firmware. Still facing any trouble or error comment or send feedback.

Download Realme 3 RMX1825 Firmware

RMX1821 A.25


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