The Bluboo S3 is a smartphone famous for its absolutely massive 8500mAh battery. However, despite this hardware, we’ve researched common user complaints and found that many owners face issues with excessive battery drain and poor software optimization, draining the battery faster than expected. Other widely reported problems include the screen registering false inputs (ghost touch), random system freezes, and general lag, especially after extended use.
These problems are almost always software-based. The firmware file provided here is the official V03 (Android 8.1.0 Oreo) update, which was released to address these exact stability and optimization issues. Flashing this stock ROM will completely reset your device, eliminating bugs, fixing the ghost touch issue, and restoring the phone’s battery management to its intended state.
Bluboo S3 Firmware Details
| Device Name | Bluboo S3 |
| Model | S3 |
| Chipset | MediaTek MT6750T |
| Android Version | 8.1.0 (Oreo) |
| Firmware Version | V03 |
| Build Date | 15-08-2018 |
| File Size | 1.16GB |
| File Type | ZIP (Full Scatter ROM) |
| Flashing Tool | SP Flash Tool |
Warning: This firmware is specifically for the Bluboo S3 (MT6750T). Do not flash it on any other device. Flashing this ROM will completely erase all personal data, including photos, contacts, and installed apps. Please back up any important data before you begin. Ensure your phone has at least 60% battery to prevent it from shutting down during the update process.
Download Official Firmware for Bluboo S3
This is the full stock ROM package for the Bluboo S3. Although the filename says “OTA,” its large size indicates it is a full flashable ROM for use with SP Flash Tool, not a small incremental update for recovery.
- 📄 Filename: Bluboo_S3_MT6750T_V03_20180815_8.1.0_OTA.zip
- 📦 Size: 1.16GB
- 🗓️ Build Date: 15-08-2018
- 🔢 Build Version: V03
- 🤖 Android Version: 8.1.0
- ⬇️ Download Link: MediaFire
How to Flash the Firmware
You will need a Windows PC, the SP Flash Tool, and the correct MediaTek VCOM drivers to install this firmware on your Bluboo S3. Here is a brief overview of the process:
- Download and extract the
Bluboo_S3_..._OTA.zipfirmware file on your computer. Inside, you will find theMT6750T_Android_scatter.txtfile. - Download and install the MediaTek VCOM USB drivers on your PC. You may need to restart your computer.
- Download and launch the SP Flash Tool application.
- Click the “Scatter-loading” button, navigate to the extracted firmware folder, and select the
MT6750T_Android_scatter.txtfile. - Turn off your Bluboo S3 completely. Click the “Download” button in SP Flash Tool, then immediately connect your powered-off phone to the PC using a USB cable. The flashing process will start.
For a complete, step-by-step guide with all download links, pictures, and troubleshooting tips, please follow our full tutorial here.
Disclaimer: This entire process is performed at your own risk. We will not be held responsible for any damage to your Bluboo S3, data loss, or any other issues that may occur. Flashing firmware can brick your device if not done correctly. If you are unsure about any step, please stop and ask for help in the comments section below.
