š± Infinix Zero 30 4G X6731B Official Firmware Restoration Guide
When your Infinix Zero 30 4G (model X6731B) experiences software malfunctions, flashing the original stock ROM is the most reliable solution. This comprehensive guide provides the exact steps professional technicians use to restore factory firmware on this specific model.
⚠️ Critical Warning: Flashing incorrect firmware can permanently brick your device. Triple-check your model number (X6731B) before proceeding. This process will erase all data - ensure complete backups before starting.
š Device Identification
The Infinix Zero 30 4G X6731B can be identified by:
- Model number in Settings > About Phone
- Distinct camera module design (triple setup with ring flash)
- MediaTek chipset (not Snapdragon)
- 4G LTE network capability only
š¾ Firmware Technical Specifications
| Component | Details |
|---|---|
| Device Model | X6731B 4G Version |
| Android Version | Android 13 XOS 13 |
| Chipset | MediaTek Helio G99 6nm |
| Security Patch | May 2024 |
| Firmware Type | Signed Factory Image |
| File Size | ~3.8GB (compressed) |
š Firmware Authentication
To ensure you have genuine Infinix firmware:
- Verify SHA-256 checksum matches official release
- Check digital certificate validity
- Confirm file structure includes auth_sv5.auth
- Validate package includes scatter file for MT6789
š ️ Preparation Requirements
- Windows PC (64-bit recommended)
- Original USB cable (3.0 or better)
- Battery charge (minimum 65%)
- Storage space (8GB free minimum)
- Backup (Google Drive + local copy)
⚙️ Required Software Tools
Essential flashing software:
- SP Flash Tool v5.2312 or newer
- MTK USB Drivers v1.0.8
- 7-Zip or WinRAR (for extraction)
- MTK Auth File (if bootloader locked)
- VCOM Preloader Drivers
š§ Step-by-Step Flashing Process
- Extract firmware package to new folder
- Install MTK USB drivers (disable driver signature enforcement)
- Open SP Flash Tool as Administrator
- Load scatter file (MT6789_Android_scatter.txt)
- Select "Download Only" mode
- Power off device completely
- Click "Download" in SP Flash Tool
- Connect powered-off device via USB
- Wait for flashing progress (red then yellow bar)
- Disconnect upon seeing green checkmark
- First boot may take 8-15 minutes
⏳ Important: Do not interrupt the flashing process. The X6731B has secure flash protection - failed flashes may require authorized box tools to recover.
š Troubleshooting Guide
Error: "BROM ERROR : S_FT_ENABLE_DRAM_FAIL (4032)"
Solution:
- Try different USB 2.0 port (not USB 3.0)
- Use original Infinix cable
- Remove battery (if possible) for 5 minutes
- Attempt flash with "Format All + Download"
Issue: No IMEI After Flash
Resolution:
- Restore from NV backup if available
- Use Maui Meta tool to rewrite IMEI
- Contact Infinix service center if persists
✅ Post-Flash Verification
After successful flashing:
- Dial *#06# to verify IMEI
- Check WiFi/BT MAC addresses
- Test all cameras (including 108MP main)
- Verify in-display fingerprint sensor
- Check for OTA updates immediately
⚖️ Legal Notice: This guide is for educational purposes only. We do not distribute copyrighted firmware files. Always obtain software through official Infinix channels. Flashing may void warranty in some regions.
š Pro Tips
- After flashing, charge to 100% and calibrate battery
- Wait 3 charge cycles before judging battery life
- Enable developer options for advanced monitoring
- Consider factory reset after first boot for clean start
- Avoid root modifications for first 72 hours
Download the necessary Files Tools and Drivers:
MTK USB Drivers SP Flash Tool (with Auth Bypass) DA Auth File