Mobicel K120 Firmware Flash File Download [Stock Rom]

The Mobicel K120 is a low-cost entry-level smartphone powered by a Spreadtrum SC7731 quad-core CPU, paired with 512MB RAM and 8GB internal storage. It typically ships with Android 6.0 Marshmallow (or Go Edition on some batches). This hardware combination is highly prone to lag, app crashes, intermittent freezing, dropped Wi-Fi, battery-related random restarts, and catastrophic bootloops where the phone won’t power past the Mobicel logo. When these issues persist despite factory reset, only a full PAC firmware reinstallation with SPD Upgrade Tool can reliably restore original system stability.

All Mobicel K120 PAC files must be flashed only with the SPD Upgrade Tool or compatible Unisoc/Spreadtrum tool.

Mobicel K120 Firmware Details

Reference hardware/specs for correct flashing and troubleshooting:

Download Official Firmware for Mobicel K120

• Build: K120_MDD_120220
  • File Name: Mobicel_K120_MDD_120220_SPD.zip
  • Size: 707MB
  • 🔗 Download Link: Download (Google Drive)
• Build: K120_Dual-SIM_MDD_100720
  • File Name: Mobicel_K120_Dual-SIM_MDD_100720_SPD.zip
  • Size: 677MB
  • 🔗 Download Link: Download (MediaFire)

Why Flash This Specific Firmware?

• Bootloop and Startup Recovery: When phone stalls on logo, black screen, or endlessly reboots, full PAC flash resets all system partitions to factory.
• Fix Persistent Freezing, Lag, and App Crash: System clean install eliminates rogue apps, viruses, and system clog causing random freezing and frequent crashing.
• Repair Camera, Battery, and Wireless Bugs: Connectivity drops, camera failures, battery-induced resets—a new firmware restores core drivers and original hardware behavior.
• Unbrick/Restore Non-responsive Phones: Bricked or no-response Mobicels can often be revived via a forced flash, unless a physical hardware defect.

Crucial Prerequisites Before Flashing

Flashing deletes all data—backup everything first.

• SPD Upgrade Tool for PAC files (Windows only).
• Spreadtrum/Unisoc USB drivers must be installed on PC.

How to Flash the Firmware

1. Download and extract the preferred PAC firmware zip.
2. Install Spreadtrum/Unisoc USB drivers.
3. Open SPD Upgrade Tool (UpgradeDownload.exe).
4. Click on the gear icon and select your .pac file.
5. Power off the phone (remove battery if possible).
6. Hold Volume Down and connect device by USB.
7. Click “Start Downloading” and wait for green “Passed”.

Step-by-step visual help: How to Use the SPD Upgrade Tool

Disclaimer: Firmware flashing erases all user data and risks device damage if interrupted. Proceed at your own risk.