Flashing the stock ROM can resolve several critical device issues:

Download and install the Spreadtrum (SPD) USB Drivers so your computer can recognize the device. How to Flash China Mobile M654 Firmware

Resets forgotten patterns, PINs, or passwords.

Eliminates system errors and application crashes.

Ensure the device has at least 50-80% charge to prevent it from dying during the process.

Before flashing, ensure your firmware matches these hardware specifications to avoid compatibility errors: Chipset: Spreadtrum (Unisoc) SC9850K Display: 5.45-inch LCD, 1440 x 720 resolution Memory: 1GB or 2GB RAM / 16GB Storage Camera: 8MP Rear / 5MP Front Battery: 3000mAh (Removable) Reasons to Flash Official Firmware

Cleans the device to its original out-of-the-box state. Preparation Checklist

Restores the phone if it won't turn on or is stuck on the logo.

Use a high-quality, original micro-USB data cable.