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 Cubot X20 is a budget friendly 6.3″ FHD+ phone (2340×1080 px), running Android 9 on a Mediatek Helio P23 (MT6763) octa-core with 4GB RAM, 64GB storage, and a 4000mAh battery. Users get solid performance, a triple rear camera (12MP wide + 20MP depth + 8MP ultra-wide), 13MP selfie, Type-C charging, expandable storage (shared with SIM), and dual 4G/LTE, all focused on utility in a glass-sandwich build. The X20 stands out for basic camera versatility, clean Android, and multi-day standby for entry price.
However, widespread complaints include slow/failed autofocus indoors, dropped SIM/calls with certain carriers, battery dropping faster than claimed, Wi-Fi/Bluetooth disconnects, charging not working above 80–90%, and rare bootloops after app/system updates. Flashing the Cubot X20 official firmware (download below) reliably fixes boot, restores driver defaults, repairs network, and brings back missing camera and Android updates.
Critical Notice: Before You Proceed
Flashing Cubot X20 firmware wipes all local files, apps, and IMEI. Backup contacts, photos, and IMEI/NVRAM before use! Do not use X20 Pro (Helio P60/MT6771) files or you may lose camera, touch, or SIM function.
Quick Device Specs (Cubot X20)
- Device:
- Cubot X20 (MT6763, Helio P23)
- Release:
- 2020
- CPU/GPU:
- Helio P23 MT6763, octa-core (4×2.0GHz + 4×1.5GHz); Mali-G71 MP2
- Display:
- 6.3″ IPS FHD+ (2340×1080), 409ppi
- RAM/Storage:
- 4GB RAM, 64GB ROM, microSD up to 128GB (hybrid slot)
- Battery:
- 4000mAh (Li-ion)
- Cameras:
- 12MP+8MP+20MP rear (triple), 13MP selfie, LED flash, 1080p video
- OS:
- Android 9.0 Pie
- Other:
- Dual SIM (standby), Type-C, accelerometer, proximity, compass
Required Downloads
- SP Flash Tool (latest)
- MediaTek VCOM USB Drivers
- Cubot_X20_MT6763_V09_200526_9.0.zip (official scatter, Pie, May 2020)
| Filename/Version | Android | Date | Size | Download |
|---|---|---|---|---|
| X20_MT6763_V09_200526_9.0 | 9.0 | May 2020 | 1.31 GB | Google Drive |
How to Flash Cubot X20 Firmware (SP Flash Tool)
- Unzip ROM to PC, locate MT6763_Android_scatter.txt.
- Install VCOM USB drivers and open SP Flash Tool.
- Select “Scatter-loading” and choose the scatter file.
- Power off device, connect via USB (Vol Down if no detection).
- Press Download, wait for green PASS, unplug and reboot.
- Test everything: call, SIM, Wi-Fi, camera, battery, and charging.
- For visual steps: MTK SP tutorial here.
Most-Reported Cubot X20 Problems & Real Fixes
1. No Calls/SIM with Some Carriers
Frequent: Data/SMS work, calls fail or cannot dial. Check 3G/LTE bands (compatible with bands: 1/3/7/8/19/20), reflash ROM, re-scan network, or use VoIP apps for unsupported regions.
2. Camera Focus/Hangs After Update
Indoor focus may lag/fail, app may hang. Use tap-to-focus, ensure >2GB free space, or fresh ROM for missing drivers.
3. Battery Discharges Fast or Wont Charge Over 90%
Run battery to 5%, then recharge full. Use stock charger/cable, clean Type-C port. If issues started after update—reflash.
4. Bootloop/Dead Black Screen after App Update
If bricked, use SP Flash Tool, load scatter, and reflash. Hold Power+VolUp 15s for forced start after long flash.
5. Wi-Fi/Bluetooth Drops, Slow Data
Reboot router, toggle airplane mode, or reset network in system settings. Reflash if persistent.
6. System or App Lag/Random Freezes
Avoid heavy BG apps; reset/flash ROM to clear memory or app data bloat.
7. SD/Storage or Face Unlock Error
If SD or Face ID fails post-update, check contacts, reset data, and use fresh ROM for new partitions.
FAQs: Cubot X20 Firmware & Owner Fixes
- Why do my calls fail but data/SMS work?
- Phone lacks North American 3G bands—try VoIP, or switch to a compatible carrier.
- Camera blurry or doesn’t open?
- Clean lens, tap-to-focus, and ensure storage is available. Use only stock app.
- Battery drops fast, won’t fully charge?
- Recalibrate: full discharge, then full recharge, or reflash ROM.
- Touch/SIM or camera still fail after flash?
- Check for correct ROM (X20, not X20 Pro/P60), and use stock drivers/tools only.
- Will flashing wipe all data/IMEI?
- Yes; backup all files, config, and IMEI before flashing.
Closing & Call to Action
Flashing Cubot X20 firmware (SP Flash Tool) repairs camera, charging, SIM/calls, and boot—critical for persistent bugs. Bookmark and share new fixes to aid the Cubot community.