Match the exact model, region, and branch name. Similar model numbers are not the same device.
Firmware files are here on Inar Guide. Tutorials, flash tools and USB drivers are on FlashGuideHub.
The Kimfly MX is a budget Android smartphone powered by the Spreadtrum SC7731 (SP7731CEA) quad-core processor. It is equipped with a 5-inch LCD, 1GB RAM, 8GB storage, and runs Android 6.0 Marshmallow. Despite being a popular entry-level phone, users often face bootloop (stuck logo), invalid/no IMEI after flashing, random reboots, slow or dropped network signal, and camera errors. These are frequently caused by firmware corruption or failed updates and are fixable by correctly flashing the official PAC file below.
This official SPD firmware (Build 20180110, PAC format) restores your Kimfly MX to original condition, repairs invalid IMEI, unbricks stuck devices, and stabilizes system performance and battery life. It is the recommended fix for persistent software faults and failed boot or OTA updates.
Kimfly MX Firmware Details
| Device Name | Kimfly MX |
| Model | SP7731CEA (SC7731) |
| Processor | Spreadtrum SC7731 (quad-core 1.3GHz) |
| GPU | Mali-400 MP2 |
| Android Version | Android 6.0 Marshmallow |
| Firmware Type | PAC file (SPD Upgrade Tool) |
| Build Date | January 10, 2018 |
| File Name | Kimfly_MX_SP7731CEA_V1.0_20180110_6.0_SPD.zip |
| File Size | 717 MB |
| Display | 5.0-inch IPS LCD, 480 × 854 px |
| RAM | 1GB |
| Storage | 8GB (microSD up to 32GB) |
| Rear Camera | 5MP, LED flash, autofocus |
| Front Camera | 2MP |
| Battery | 2200 mAh Li-Ion (removable) |
| SIM Slots | Dual SIM (Micro) |
| Connectivity | 3G WCDMA, WiFi 802.11 b/g/n, Bluetooth 4.0, FM, GPS |
| Dimensions | 145 × 72 × 9 mm, 158g |
⚠️ Firmware Flashing Warning
Using the wrong firmware or interrupting a flash may brick your phone or erase the IMEI. Confirm your model matches SP7731CEA, charge battery above 80%, and back up personal data before flashing. All user data will be lost during flashing.
Download Official Firmware for Kimfly MX
📄 Filename: Kimfly_MX_SP7731CEA_V1.0_20180110_6.0_SPD.zip
📦 Size: 717 MB
🗓️ Build Date: January 10, 2018
🔢 Build Version: V1.0_20180110
🤖 Android Version: Android 6.0 Marshmallow
⬇️ Download Link: MediaFire Cloud Storage
Firmware Highlights
- Fixes bootloop, stuck logo, and random restarts
- Restores invalid/null IMEI and network detection
- Enhances system performance, battery, and app stability
- Repairs camera and touchscreen bugs
- Improves WiFi, Bluetooth, and 3G signal strength
- Delivers security and Android 6.0 bug fixes
How to Flash the Firmware
Flashing Kimfly MX SPD firmware uses the SPD Upgrade Tool. Here are 5 quick steps:
- Download and extract the
Kimfly_MX_SP7731CEA_V1.0_20180110_6.0_SPD.zipfile to your computer. - Install SPD USB drivers and SPD Upgrade Tool.
- Power off the device and connect via USB cable.
- Open SPD Upgrade Tool and load the PAC firmware.
- Click “Start Download” and wait for pass message.
For troubleshooting and a step-by-step illustrated guide, visit the SPD firmware flashing guide.
Disclaimer
This firmware and flashing guide are provided without warranty. The author is not responsible for device damage, data/IMEI loss, or issues from improper flashing. Always use files for your exact device and follow steps carefully—or get help from a qualified technician if needed. For questions or sharing experiences, comment below for community support.