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.
