Download Official Cubot Rainbow 2 Stock Firmware ROM (Flash File)

This guide provides official download links for the Cubot Rainbow 2 stock firmware. The Rainbow 2 was a budget dual-camera phone released in 2017. If your device has problems like camera issues, battery drain, charging problems, or malware infections, flashing the stock firmware can fix these issues.

Cubot Rainbow 2: Device Specifications

Make sure these specs match your phone before flashing:

Device Name:

Cubot Rainbow 2

Release Date:

2017

Chipset:

MediaTek MT6580A

Display:

5.0 inches, 720 x 1280 pixels

Battery:

2350 mAh

RAM/Storage:

1GB RAM / 16GB Storage

Key Features:

Dual rear cameras, Front LED flash, Android 7.0

Required Downloads

You need these tools to flash your phone:

• SP Flash Tool (Latest Version)
• MediaTek USB Drivers
• Cubot Rainbow 2 firmware file (choose version below)

Cubot Rainbow 2 Firmware Download Links

How to Flash Cubot Rainbow 2 Firmware

Follow these steps to flash your phone:

1. Preparation: Download firmware, SP Flash Tool, and drivers. Extract all files to one folder.
2. Install Drivers: Run the MediaTek driver installer.
3. Load Firmware: Open SP Flash Tool, click “Scatter-loading File,” select the scatter file from firmware folder.
4. Set Mode: Choose “Download Only” to keep your IMEI safe.
5. Flash Phone: Turn off phone, hold Volume Up + Volume Down, connect USB cable, release buttons when flashing starts.

Common Problems and Solutions

Here are fixes for common Cubot Rainbow 2 issues:

1. Dual Camera Not Working

Problem: Background blur effect doesn’t work, only one camera works.
Solution: Clear camera app cache: Settings > Apps > Camera > Storage > Clear Cache. Test camera in good lighting. If still broken, flash latest firmware.

2. Battery Drains Too Fast

Problem: Battery doesn’t last long despite 2350mAh capacity.
Solution: Check for malware (see below). Close unused apps. Restart phone every 2-3 days. Flash V05 firmware to fix battery optimization.

3. Phone Has Malware/Ads

Problem: Random ads appear, battery drains fast, phone slow.
Solution: This is embedded malware in SystemUI. Only solution is flashing V05 firmware which removes the malware completely.

4. Phone Won’t Charge

Problem: Battery doesn’t charge or charges very slowly.
Solution: Clean charging port with compressed air. Try different cable/charger. Use 2A charger for faster charging. If still broken, may need port replacement.

5. Camera Shows Black Screen

Problem: Camera app opens but shows black screen.
Solution: Restart phone. Check camera permissions: Settings > Apps > Camera > Permissions. Clear camera data. If still broken, try third-party camera app.

Frequently Asked Questions

Will flashing firmware fix malware?

Yes, flashing V05 firmware completely removes the embedded malware that causes ads and battery drain.

Why does my camera quality look bad?

Cubot uses interpolation – the “13MP” camera is actually 8MP made to look like 13MP. This is why photo quality is poor.

Can I fix the charging port myself?

You can try cleaning it with compressed air, but if it’s physically damaged, you need professional repair.

How do I know if my phone has malware?

Signs include: random full-screen ads, fast battery drain, phone running slow, high data usage.

Why does my phone get slow after few days?

The 1GB RAM fills up. Restart your phone every 2-3 days to keep it running smooth.

Conclusion

Flashing the official V05 firmware fixes most Cubot Rainbow 2 problems including malware, battery drain, camera issues, and charging problems. Always use the latest firmware version for best results.

If this guide helped you fix your Rainbow 2, share your experience in the comments to help other users!