Leagoo M9 Pro Firmware Flash File Download [Stock Rom]

The Leagoo M9 Pro was a budget smartphone from 2018 that offered a modern 18:9 aspect ratio display and ran on Android 8.1 Oreo. It was powered by a MediaTek MT6739 quad-core processor and equipped with 2GB of RAM and 16GB of storage. While it ran a relatively modern version of Android, the entry-level hardware often struggled to keep up, leading to common issues like UI lag, poor battery life, and general instability. This official firmware package is a stability and performance update from Leagoo, designed to address these issues and restore the device to its intended factory state.

Note: The firmware filename contains “OS3.0,” which is the version for Leagoo’s custom user interface. The actual operating system is Android 8.1 Oreo.

Leagoo M9 Pro Firmware Details

Below are the key specifications for the Leagoo M9 Pro. This firmware will restore the device to its original Android 8.1 Oreo software.

Why Flash the Stock Firmware on Your Leagoo M9 Pro?

Flashing this official stability update can resolve many of the common issues that affect devices running Android 8.1 Oreo on entry-level hardware:

• Fix Performance Lag: A clean install is the most effective way to address the UI lag and stuttering caused by the MT6739 processor and limited RAM running a modern OS.
• Improve Battery Life: Many users of Oreo devices reported abnormal battery drain. This firmware can resolve underlying software inefficiencies that cause the battery to deplete too quickly.
• Stop App Crashes: Solves persistent “force close” errors and general system instability that occur when the hardware is strained.
• Remove Bloatware: A clean flash provides a fresh start, free from any pre-installed apps that consume system resources.
• Fix Bootloop Errors: The only reliable method to fix a phone that is stuck on the Leagoo startup logo.
• Unbrick Your Device: Can revive a phone that has become completely unresponsive due to a software error.

⚠️ Important Prerequisites

Before you begin, back up any accessible data. This process will completely erase all data from the phone’s internal storage.

• The latest version of the SP Flash Tool.
• The correct MediaTek VCOM USB drivers installed on your PC.

Download Official Firmware for Leagoo M9 Pro

• Build Date: 17082018
  • File Name: Leagoo_M9_Pro_MT6739_OS3.0_E_17082018.zip
  • Size: 1.08 GB
  • 🔗 Download Link: Download (MediaFire)

How to Flash the Firmware

This firmware must be installed using the SP Flash Tool. The process involves loading a scatter file from the downloaded firmware.

CRITICAL WARNING: To avoid losing your phone’s IMEI numbers, which are essential for making calls, you must use the correct flashing mode. In SP Flash Tool, select the “Firmware Upgrade” option from the dropdown menu. DO NOT use the “Format All + Download” option, as it will erase your device’s unique identifiers.

1. Download and extract the Leagoo_M9_Pro_..._17082018.zip file to a new folder on your computer.
2. Ensure the MediaTek VCOM USB drivers are properly installed on your PC.
3. Launch the SP Flash Tool software.
4. Click the “Scatter-loading” button and select the MT6739_Android_scatter.txt file from the extracted firmware folder.
5. From the dropdown menu below the scatter file path, change the mode from “Download Only” to “Firmware Upgrade“.
6. Completely power off your Leagoo M9 Pro.
7. Click the green “Download” button.
8. Connect your powered-off phone to the computer via USB cable to begin the flashing process.

For a complete, step-by-step tutorial, please follow our master guide:

→ How to Flash Stock Firmware to MediaTek (MTK) Smartphones

Disclaimer: Flashing firmware is an advanced procedure that carries inherent risks. Using the wrong flashing mode can permanently damage your device or erase its IMEI. Proceed with extreme caution. We are not responsible for any data loss or hardware issues.