This page will guide installing the official stock Firmware flash file on your Realme 12 Plus 5G RMX3867/RMX3868. The device is based on Android 14, which the MediaTek processor powers. This guide will be helpful to unbrick or fix any software issues on your device.
To install the firmware flash file on Realme 12 Plus 5G RMX3867/RMX3868, you need to download the SP Flash tool. This method is simple and easy. We have also added video and step-by-step tutorials to make things easier to flash the firmware file.
Page Contents
Realme 12 Plus 5G Device Overview:
The Realme 12 Plus 5G, released in March 2024, is a mid-range smartphone that combines a premium build with strong performance and modern features. The device features a 6.67-inch AMOLED display with a 120Hz refresh rate, HDR10+ support, and peak brightness of 2000 nits, ensuring vibrant and smooth visuals. The screen is encased in a sleek design with a glass front, silicone polymer back with an eco-leather finish, and a plastic frame. Weighing 190 g, the phone is IP54-rated for dust and splash resistance.
Powered by the MediaTek Dimensity 7050 chipset with an octa-core CPU and Mali-G68 MC4 GPU, the Realme 12 Plus 5G is equipped to handle demanding tasks. It runs on Android 14 with Realme UI 5.0, and it will receive up to two major Android upgrades. The phone offers various memory configurations, ranging from 128GB with 8GB RAM to 512GB with 12GB RAM, and it supports expandable storage via a microSDXC card using the shared SIM slot.
In the camera department, the Realme 12 Plus 5G features a versatile triple-camera setup, including a 50 MP wide lens with PDAF and OIS, an 8 MP ultrawide lens with a 112° field of view, and a 2 MP macro lens for close-up shots. The camera system supports 4K video recording at 30fps and offers gyro-EIS for stable footage. The 16 MP front camera is ideal for selfies and video calls, with 1080p video recording capabilities.
The phone is equipped with stereo speakers and a 3.5mm headphone jack, along with Hi-Res audio support for an enhanced audio experience. Connectivity options include dual-band Wi-Fi 6, Bluetooth 5.2, NFC, and multiple positioning systems. The device is powered by a 5000 mAh battery with 67W wired charging, allowing it to reach 50% charge in just 19 minutes, making the Realme 12 Plus 5G a reliable choice for users who need a blend of style, performance, and fast charging.
Advantages of Stock ROM:
Here are the answers to why you need to download and save the Realme 12 Plus 5G Stock ROM flash file on your computer.
- If your device is dead, you can unbrick using the Stock ROM file
- You can fix or repair the IMEI on your device using DB files from Stock ROM
- Remove any malware or adware from Realme 12 Plus 5G
- You can fix the boot loop issue on Realme 12 Plus 5G
- Fix Unfortunately, the app has stopped errors on Realme 12 Plus 5G
- Fix Network related issue
- Patch Boot image to Root using Magisk: Mediatek Guide or Spreadtrum Guide
- You can unroot Realme 12 Plus 5G
- To Reset or Remove FRP on your device: Mediatek FRP Guide or Spreadtrum FRP Guide
- Restore Realme 12 Plus 5G to Factory State
Steps to Install Stock Firmware on Realme 12 Plus 5G RMX3867/RMX3868
Before we get straight to the Steps to install stock firmware on Realme 12 Plus 5G RMX3867/RMX3868, let us look at some of the prerequisites.
Pre-Requirements:
- Supported device: Realme 12 Plus 5G RMX3867/RMX3868
- Make sure to charge your device more than 50%
- You need a PC or Laptop with a USB cable.
- Take a complete backup using any method given below
- Download Drivers and Tools: VCOM drivers, SP Flash Tool, and Realme USB Drivers
Download Flash Files for Realme 12 Plus 5G RMX3867:
| Software Version | Download Link |
| Flash File Name: Realme_12_Plus_5G_RMX3867_MT6877_EX_11_A.15_240224
File Size: 25.78 GB |
Download |
| Flash File Name: Realme_12_Plus_5G_RMX3867_MT6877_EX_11_14.0.0.504EX01_240330
File Size: 6.49 GB |
Download |
| Flash File Name: Realme_12_Plus_5G_RMX3867_MT6877_EX_11_14.0.0.506EX01_240417
File Size: 6.55 GB |
Download |
Download Flash Files for Realme 12 Plus 5G RMX3868:
| Software Version | Download Link |
| Flash File Name: Realme_12_Plus_5G_RMX3868_MT6877_EX_11_A.08_240228
File Size: 6.16 GB |
Download |
| Flash File Name: Realme_12_Plus_5G_RMX3868_MT6877_EX_11_14.0.0.505EX01_240402
File Size: 6.17 GB |
Download |
Method 1: Instructions to Install via Recovery:
First, you can try the official method to install the OTA stock ROM update via Realme device recovery.
Method 2: Instructions to Install via SP Flash Tool
Now, without wasting any more time, let’s jump into the firmware installation steps below:
- Make sure you follow and download all the required files and flash tools on your PC.
- Open the flash tool exe file to open the SP Flash Tool User Interface
- Once your load the SP Flash tool UI, Tap on the Download option
- In the download tab, you have to load both the download agent and the scatter text file in the scatter-loading section.
- You will find the scatter text file inside the ROM package for most cases, if not, you can create a scatter text file on your own.
- Once you load the file, click the Download button
- To start the upgrade process of stock ROM on your Realme 12 Plus 5G, you need to turn off your device and hold the Volume Down and Volume Up keys together and Connect your Phone to your PC/Laptop using a USB Cable (Keep the Volume Down and Volume Up button until your computer detects the phone.)
- When the phone connects, your device will start upgrading the stock firmware
- You need to wait for a few minutes to complete the upgrade process.
- Once the flashing process completes, you will find a green button which means a successful upgrade.
- That’s it! You can reboot your Realme 12 Plus 5G
Follow our full-depth video guide below
So that’s it guys, this was our take on How to flash the firmware file on Realme 12 Plus 5G. We hope that you found this post useful. Let us know what you guys think about it in the comments section down below.