This guide provides the official download link for stock firmware version V04 (August 10, 2018) for the Cubot King Kong 3. Launched in mid-2018, the King Kong 3 is a fully rugged IP68-rated smartphone featuring a 5.5-inch HD+ display, MediaTek Helio P23 (MT6763T) octa-core processor, dual rear cameras, NFC support, and a massive 6000 mAh non-detachable battery. If your device exhibits GPS calibration drift, NFC payment failures, abnormal battery drain, or sensor malfunctions, reflashing the stock firmware restores factory settings and resolves software-related issues.
User Data Advisory for the Cubot King Kong 3
Critical Pre-Flash Warning: This procedure will erase all data on your Cubot King Kong 3. Back up all personal files, photos, and apps. Incorrect flashing can damage your IMEI. Proceed carefully.
Cubot King Kong 3: Quick Device Specifications
- Model:
- Cubot King Kong 3
- Release Date:
- June 2018
- Chipset:
- MediaTek Helio P23 (MT6763T), 4×2.5 GHz + 4×1.65 GHz, 16 nm
- Display:
- 5.5″ IPS LCD, 720×1440 px (HD+), 18:9, Corning Gorilla Glass
- Battery:
- 6000 mAh non-detachable Li-Po, 9 V/2 A fast charge
- RAM/Storage:
- 4 GB RAM / 64 GB eMMC 5.1 (expandable via microSD)
- Cameras:
- 16 MP Sony main + 2 MP depth rear; 13 MP front
- Key Features:
- IP68 rugged design, NFC, GPS/GLONASS, rear fingerprint sensor, LED notification light
Required Downloads for Flashing
- SP Flash Tool (Latest Version)
- MediaTek VCOM USB Drivers
- King Kong 3 Firmware V04 package
Cubot King Kong 3 Firmware Download Link
| Filename / Version (Date) | Android | Size | Download Link |
|---|---|---|---|
| King Kong 3_V04 (Aug 10, 2018) | Android 8.1 | 1.37 GB | Download (Google Drive) |
How to Flash Cubot King Kong 3 Firmware
- Preparation: Download V04 firmware, SP Flash Tool, and VCOM drivers. Extract files into one folder.
- Install Drivers: Run the VCOM driver installer; disable driver signature enforcement if needed.
- Load Firmware: Launch
flash_tool.exe, click “Scatter-loading File,” and selectMT6763_Android_scatter.txt. - Flash Mode: Choose “Download Only” to preserve IMEI, then click the green “Download” button.
- Flash Device: Power off phone, hold Vol Up + Vol Down, connect USB-C cable, release when flashing begins. Wait for green success dialog.
For detailed step-by-step instructions with screenshots, see: How to Flash Stock Firmware on MediaTek (MTK) Smartphones.
Troubleshooting Common Issues
GPS Calibration Drift Under Rugged Conditions
Cause: Firmware GPS AGPS data corruption causes slow or inaccurate location fixes after extreme temperature or pressure exposure.
Solution: Clear AGPS cache: Settings > Apps > Show system apps > AGPSManager > Storage & cache > Clear cache. Flash V04 firmware to restore correct AGPS initialization scripts.
NFC Payment Failures with Google Pay
Cause: NFC sensor power gating in deep sleep mode fails under firmware early builds.
Solution: Enable “Keep NFC on during sleep” in Settings > Connected devices > NFC. Re-flash V04 to update NFC power management module.
Abnormal Battery Drain in Rugged Mode
Cause: Inadequate power profiles for Bluetooth and GPS modules under IP68 tuning.
Solution: Disable always-on Bluetooth scanning and high-accuracy GPS when not needed. Flash V04 firmware to apply optimized battery profiles for rugged sensors.
Fingerprint Sensor Fails After Splash Testing
Cause: Driver uninitialization sequence bug affecting FPC1020 sensor after water ingress tests.
Solution: Clean sensor area, reboot device. Flash V04 to restore proper sensor initialization sequence and waterproof mode handler.
Screen Unresponsive at Edge of Gorilla Glass Corners
Cause: Touch controller misalignment around heavy-duty bumper frames.
Solution: Flash V04 firmware to apply updated touch-IC coordinate remapping for reinforced bezel regions.
Frequently Asked Questions (FAQs)
- Will flashing firmware remove rugged certifications?
- No. V04 restores original rugged-mode software layers required for IP68 and MIL-STD toughness.
- My phone is bricked; can SP Flash Tool still fix it?
- Yes. As long as MT6763 preloader port is detected (while holding Vol Up+Vol Down), SP Flash Tool can restore the full ROM.
- Why does NFC sometimes not detect cards?
- Ensure NFC antenna area is clean and metallic cases are removed. V04 improves NFC power gating to reduce missed taps.
- Does V04 update Android version?
- No. V04 remains on Android 8.1 with security patches and rugged-mode optimizations only.
- Can I upgrade to Android 10?
- No official Android 10 update is available for Helio P23 devices. V04 is the final stock build.
Conclusion
Flashing the official V04 firmware on your Cubot King Kong 3 is the most reliable way to resolve specialized rugged-mode software issues—GPS drift, NFC failures, battery drain under extreme conditions, and touch unresponsiveness around reinforced edges. This firmware re-enables full IP68/MIL-STD functionality and restores stability to the Helio P23 platform.
If this guide helped you recover your King Kong 3, please share your experience in the comments, especially which rugged-mode fixes worked for you. Your feedback supports our community of outdoor enthusiasts relying on fully rugged smartphones!
