Download Official Cubot Power Stock Firmware ROM (Flash File)

This comprehensive guide provides the official download links for all available stock ROM versions for the Cubot Power. The Cubot Power was a flagship-grade battery-focused smartphone launched in April 2018, notable for its exceptional Samsung 20MP primary sensor with 6P optical element construction and f/2.0 large aperture, revolutionary 6000mAh high-density lithium-polymer battery providing up to 46 hours talk time and 600 hours standby, premium MediaTek Helio P23 MT6763T high-frequency variant with 2.5GHz octa-core architecture, sophisticated dual-band Wi-Fi connectivity with TAS 2.0 antenna switching technology, and advanced Type-C USB 2.0 fast charging implementation supporting 5V/2A power delivery. If your device is stuck in a bootloop, experiencing software glitches like Samsung 20MP sensor autofocus hunting requiring physical tapping to achieve focus lock, Type-C charging port debris accumulation causing intermittent charging interruptions, massive 6000mAh battery experiencing abnormal drain despite intelligent power management algorithms, proximity sensor calibration failures during calls, or has been soft-bricked during custom ROM installations, flashing the stock firmware is the ultimate solution.

This package contains the original Android 8.1 Oreo software optimized for the MediaTek MT6763T Helio P23 flagship-variant architecture with advanced CorePilot 4.0 energy management. Reinstalling the firmware via the SP Flash Tool will perform a complete system restoration, resolving deep-seated software conflicts specific to the Samsung 20MP sensor autofocus algorithms and Type-C power management protocols. It is the most effective method to unbrick a Cubot Power and restore it to its original manufacturer specification with full 6000mAh battery optimization. We have listed all available firmware versions below; please read the recommendations in the table for guidance on addressing your specific Samsung camera sensor or Type-C charging hardware configuration issues.

Cubot Power: Quick Device Specifications

Please confirm these details match your phone to ensure you are using the correct firmware file.

Device Name/Model:

Cubot Power

Release Date:

April 2018

Chipset:

MediaTek MT6763T Helio P23 (16nm TSMC) with Mali-G71 MP2 GPU @ 770MHz

Display:

5.99 inches, 1080 x 2160 pixels (FHD+), IPS LCD with 18:9 aspect ratio

Battery:

6000 mAh, Non-removable Li-Polymer with intelligent power management

RAM/Storage:

6GB LPDDR4X RAM / 128GB eMMC 5.1 Internal Storage

Key Features:

Samsung 20MP Main Camera (6P Lens, f/2.0, PDAF), 13MP Front Camera with AI Beautification, Type-C USB 2.0 OTG with 5V/2A Fast Charging, Dual-Band Wi-Fi with TAS 2.0 Technology, Project Treble Support

Required Downloads for Flashing

You will need the following tools and drivers to flash your phone successfully.

• SP Flash Tool (Latest Version)
• MediaTek VCOM USB Drivers
• A Cubot Power Firmware Package (choose a version from the table below)

Cubot Power Firmware Download Links

How to Flash Cubot Power Firmware

This is a summary of the flashing process using SP Flash Tool. For a more comprehensive guide with screenshots, please visit our detailed pillar article.

1. Preparation: Download your chosen firmware version, the SP Flash Tool, and MTK VCOM drivers. Extract all zip files into a single, easy-to-access folder.
2. Driver Installation: Install the MediaTek VCOM drivers. You may need to disable driver signature enforcement on modern Windows versions.
3. Load Firmware: Run flash_tool.exe. Click the “Scatter-loading File” button and select the MT6763_Android_scatter.txt file from the extracted firmware folder.
4. Begin Flashing: Set the dropdown box to “Download Only” to protect your phone’s IMEI. Click the large green “Download” button to put the tool in standby.
5. Connect the Phone: Power off your Cubot Power completely and clean the Type-C port thoroughly with compressed air to remove debris accumulation. Press and hold both Volume Up + Volume Down keys simultaneously. While holding the keys, connect the phone to your PC with the Type-C cable, ensuring secure connection. Release the keys once the flashing begins. A green circle will appear when the process is complete.

For in-depth instructions and error solutions for the SP Flash Tool, please visit our complete guide: How to Flash Firmware on MediaTek (MTK) Smartphones.

Troubleshooting Common Issues

Based on extensive user reports from XDA Forums, photography communities, and power user groups, here are specific problems with the Cubot Power and their solutions.

1. Samsung 20MP Sensor Autofocus Hunting Requiring Physical Phone Tapping

Cause: This is the most critical hardware-software issue affecting the Samsung 20MP primary sensor with 6P optical construction. Users report that the autofocus mechanism becomes mechanically stuck and continuously hunts for focus without achieving lock, particularly affecting subjects beyond 1 meter distance. The issue requires physical tapping of the phone or camera module area to temporarily unstick the autofocus actuator.

Solution: The Samsung 20MP sensor autofocus hunting indicates mechanical actuator degradation combined with software calibration issues. First, clear camera app storage completely and disable all third-party camera applications. Test autofocus in bright lighting conditions as the Samsung sensor requires adequate illumination for PDAF operation. For temporary fixes, gently tap the rear camera area or rapidly switch between camera modes to unstick the focus mechanism. However, the V21 firmware includes updated Samsung 20MP autofocus algorithms and recalibrated actuator control parameters. If physical tapping is consistently required, the autofocus actuator mechanism within the Samsung sensor module requires professional replacement.

2. Type-C Charging Port Debris Accumulation Causing Intermittent Connection

Cause: The Type-C USB 2.0 implementation experiences severe debris and lint accumulation that compresses over time, preventing proper connector seating. Users report that charging cables become loose, charging stops intermittently, or requires specific cable angles to maintain connection. The Type-C port’s larger opening compared to micro-USB allows more debris entry.

Solution: The Type-C charging connection issues are primarily caused by compacted debris rather than hardware failure. Power off the device completely and use compressed air followed by a thin plastic tool (SIM ejector or bamboo skewer split lengthwise) to carefully scrape out accumulated lint. The debris becomes heavily compressed from repeated insertions and may require significant cleaning effort. Test multiple Type-C cables as some may have worn connectors that exacerbate connection issues. The massive 6000mAh battery makes power cycling impossible through battery removal, so use hardware reset combinations if charging completely fails. The V21 firmware includes enhanced Type-C power management with improved voltage tolerance for unstable connections.

3. Massive 6000mAh Battery Experiencing Abnormal Drain Despite Power Management

Cause: Despite the intelligent power management system and CorePilot 4.0 energy scheduling, users report significantly reduced battery life from the expected 46 hours talk time. The MediaTek MT6763T’s 16nm process should provide efficient power consumption, but background services and app optimization issues can cause excessive drain.

Solution: The 6000mAh battery capacity should provide exceptional endurance, with laboratory tests showing 12 hours 41 minutes browsing time and 16 hours 54 minutes video playback. Monitor battery usage in Settings > Battery to identify problematic applications consuming excessive power. Disable aggressive background app refresh, location services, and automatic synchronization for non-essential apps. The CorePilot 4.0 system with Energy Aware Scheduling requires proper calibration through firmware updates. The V21 firmware includes optimized power profiles and enhanced battery management algorithms specifically tuned for the 6000mAh capacity. If drain persists after optimization, the high-density lithium-polymer battery may have degraded and require professional replacement.

4. Proximity Sensor Calibration Failures During Phone Calls

Cause: The proximity sensor experiences calibration issues that prevent the screen from turning off during calls, causing accidental touch inputs. This is particularly problematic with the 5.99-inch FHD+ display and can result in call disconnections or unwanted feature activation.

Solution: The proximity sensor malfunction often results from debris accumulation, screen protectors, or static electricity interference. Clean the top area of the device thoroughly with a soft cloth and remove any third-party screen protectors or cases that may obstruct the sensor. Test the proximity sensor in the Samsung Members app or similar diagnostic tools. Disable “Double tap to turn on screen” as this can interfere with proximity sensor operation. The V21 firmware includes enhanced proximity sensor calibration algorithms and improved call management protocols. If issues persist, the sensor may require hardware replacement or professional calibration.

5. Project Treble Custom ROM Installation Bootloops and Extended Boot Times

Cause: The Cubot Power supports Project Treble for custom ROM installation, but users experience bootloops, extremely long boot times (5-30 minutes), and system instability when flashing Android 10 GSIs. The MediaTek MT6763T’s security features and bootloader configuration can conflict with custom ROM installations.

Solution: Project Treble support allows Android 10 GSI installation, but requires specific preparation steps to avoid bootloops. Ensure OEM unlocking is enabled and bootloader is properly unlocked using `fastboot oem unlock`. Install SuperSU and no-verity-opt-encrypt to prevent verification failures. Always maintain stock ROM backup as recovery from bootloops requires complete reflashing. Boot times after custom ROM installation can extend up to 30 minutes initially but should normalize after complete system initialization. The V21 firmware provides the most stable base for Project Treble modifications and custom ROM installations. However, custom ROM installation voids warranty and may cause permanent hardware damage if performed incorrectly.

Frequently Asked Questions (FAQs)

Why does my Samsung 20MP camera require tapping the phone to focus?

The Samsung 20MP sensor with 6P optical construction has a mechanical autofocus actuator that can become stuck due to wear or debris. This requires physical vibration to unstick the mechanism temporarily. The V21 firmware includes improved autofocus algorithms, but mechanical issues require hardware repair.

How can I prevent Type-C charging port debris accumulation?

Store the phone with the Type-C port facing downward in pockets to prevent lint entry. Use port covers when not charging and clean monthly with compressed air. The Type-C design accumulates debris faster than micro-USB due to the larger opening.

Is the 6000mAh battery life really as advertised?

Laboratory tests confirm 46 hours talk time, 15 hours video playback, and 600 hours standby under optimal conditions. Real-world usage with screen-on time of 12-13 hours is achievable with proper power management. The V21 firmware optimizes battery algorithms for maximum efficiency.

Can I upgrade the Cubot Power to Android 10 or newer?

No official Android 10 update exists, but Project Treble support allows custom Android 10 GSI installation. This process is complex, voids warranty, and may cause bootloops requiring professional recovery. The V21 Android 8.1 firmware is the final official version.

Why does the proximity sensor not work during calls?

Screen protectors, debris, or static electricity can interfere with proximity sensor operation. The sensor location varies by device orientation and requires clean, unobstructed access. V21 firmware includes improved sensor calibration for better call management.

How can I optimize the MediaTek MT6763T performance?

The Helio P23 MT6763T high-frequency variant provides excellent performance with CorePilot 4.0 energy management. AnTuTu scores around 72,590 indicate solid mid-range performance. The Mali-G71 MP2 GPU handles most tasks efficiently with proper thermal management.

Conclusion

Restoring the official stock firmware on your Cubot Power is essential for addressing the complex interplay of issues affecting this flagship battery-focused device, particularly the critical Samsung 20MP sensor autofocus hunting problems, Type-C charging port debris-related interruptions, and 6000mAh battery optimization challenges. This guide provides all available firmware files and specialized flashing instructions for the MediaTek MT6763T-powered Android 8.1 Oreo system.

The revolutionary 6000mAh battery capacity and premium Samsung 20MP camera sensor make this device unique in the power-focused smartphone category, but require specialized maintenance approaches. Remember that the MediaTek Helio P23 MT6763T high-frequency variant and Project Treble support represent advanced engineering implementations that demand precise software coordination.

If this guide helped you resolve your Cubot Power issues, please share your experience in the comments, especially which firmware version worked for your specific Samsung camera autofocus or Type-C charging problems and whether the 6000mAh battery performance met your expectations. Your feedback helps our community of power users dealing with similar flagship-grade hardware challenges!