If your Cubot Note S is encountering proximity sensor failures during calls, intermittent charging interruptions, random bootloops, or GPS drift, flashing the official stock firmware offers the most comprehensive fix. This guide delivers verified firmware downloads, concise SP Flash Tool instructions, and a troubleshooting section customized for the Note S’s MT6580 chipset and unique hardware quirks.
🚨 Critical Pre-Flash Warning
Flashing will erase all data on your Note S, including photos, contacts, and apps. Back up your data first. Incorrect SP Flash Tool use can damage IMEI—follow steps precisely. For complete flashing procedures, visit our comprehensive guide: How to Flash Firmware on MediaTek Smartphones.
Device Specifications Verification
Ensure these match your device:
| Specification | Details |
|---|---|
| Device Name | Cubot Note S (M800/E6020 variant) |
| Model | Note S (M800/E6020 variant) |
| Chipset | MediaTek MT6580 (1.3 GHz Quad-Core) |
| GPU | Mali-400 MP2 @ 500 MHz |
| Display | 5.0″ IPS LCD, 1280×720 HD |
| RAM/Storage | 1 GB RAM / 8 GB internal |
| Battery | 3000 mAh removable Li-Ion |
| Android | 5.1 Lollipop |
| Features | 13 MP rear + 5 MP front camera, proximity sensor, GPS |
Official Firmware Downloads
| Filename | Date | Size | Link |
|---|---|---|---|
| Cubot_Note_S_MT6580_V0.1_20151225_5.1.zip | Dec 2015 | 798 MB | MediaFire |
| Cubot_Note_S_20151225_5.1.zip | Dec 2015 | 801 MB | MediaFire |
| Cubot_Note_S_20160322_5.1.zip | Mar 2016 | 830 MB | MediaFire |
| Note S_M800_CUBOT_V5.0_20160924(69).rar | Sep 2016 | 857 MB | MEGA |
| Note S M800_CUBOT_V6.0_20170711.zip | Jul 2017 | 1.00 GB | MEGA |
⭐ Recommendation: Flash the latest V6.0 July 2017 build for updated proximity sensor drivers, improved charging-IC calibration, optimized GPS AGPS, and bootloop fixes.
Required Tools & Drivers
- SP Flash Tool (latest)
- MediaTek USB VCOM Drivers
- Firmware package above
Quick Flashing Instructions
- Install SP Flash Tool and USB drivers on PC.
- Load
MT6580_Android_scatter.txtin SP Flash Tool. - Select “Download Only” mode.
- Power off phone, click “Download,” connect via USB.
- Wait for green checkmark, then reboot.
Troubleshooting & Optimization Guide
1. Proximity Sensor Failures
- Symptoms: Screen stays on during calls, accidental touches at ear.
- Clean sensor area with compressed air to remove dust.
- Calibrate sensor: dial *#*#3646633#*#* > Hardware Testing > Proximity > Calibrate.
- Reduce screen timeout: Settings > Display > Sleep.
- Flash V6 firmware to restore sensor driver thresholds.
2. Charging Interruptions & Slow Charging
- Symptoms: Charging stops at 80%, requires cable reposition.
- Use original 5 V/2 A charger and quality cable.
- Clean Micro-USB port contacts with isopropyl swab.
- Calibrate battery: full drain and full charge without interruption.
- Flash V6 firmware to update charging-IC calibration.
3. GPS Drift & Slow Lock
- Symptoms: Location drifts significantly, slow initial fix.
- Enable AGPS & Wi-Fi scanning: Settings > Location.
- Reset AGPS data via GPS Test app > Manage A-GPS > Reset & Download.
- Flash V6 firmware to update GNSS driver config.
4. Camera App Crashes & Preview Errors
- Symptoms: Camera app closes, preview freezes, photos fail.
- Clear Camera app storage: Settings > Apps > Camera > Clear Data & Cache.
- Test in manual mode for stable ISP load.
- Flash V6 firmware to restore camera ISP and module firmware.
- Use alternate camera app if stock continues to fail.
5. Random Bootloops
- Symptoms: Restarts at logo, loops after installs.
- Wipe cache partition in Recovery.
- Uninstall recent apps in Safe Mode.
- Flash V6 firmware “Download Only.”
- Factory reset if loops persist.
Frequently Asked Questions
- Will I lose IMEI when flashing?
- No—“Download Only” preserves IMEI, but always back it up before flashing.
- Why is my proximity sensor still faulty?
- Hardware wear can cause sensor drift; firmware recalibration helps, but replacement may be needed.
- How do I prevent GPS drift?
- Enable AGPS, reset satellite data regularly, and flash latest firmware for GNSS driver updates.
- Why does camera app crash?
- Clearing cache and flashing firmware restores ISP settings; if persists, a module may be failing.
- Charger stops at 80%; how fix?
- Clean ports, calibrate battery, and use original charger; firmware update resets charge thresholds.
Unique Expert Recommendations
- Clean proximity sensor and charging port monthly to prevent failures.
- Calibrate battery quarterly for accurate reading and charging cycles.
- Perform AGPS reset monthly for consistent GPS performance.
- Wipe cache partition after each firmware update to clear old files.
- Use Safe Mode to isolate app-related bootloop issues before flashing.
- Maintain at least 1 GB free storage to avoid performance and boot issues.
Conclusion
Flashing the Cubot Note S V6.0 stock firmware (July 2017 build) addresses proximity sensor, charging, GPS, camera, and bootloop issues on the MT6580 platform. Follow SP Flash Tool instructions precisely and apply these targeted troubleshooting steps to restore your device’s reliability.
Success? Share your results—let us know if V6 firmware fixed your sensor or charging problems to help other Note S users!
