Download Xiaomi Mi 3/Mi 4 Firmware (cancro): Fix Bootloop, Lag & Software Issues
This comprehensive guide provides direct download links for the stock firmware flash files and step-by-step instructions to restore your Xiaomi Mi 3 or Mi 4 (cancro). Whether you need to reset your phone, fix bootloop issues, bypass password locks, resolve device freezing, or address other software problems, this guide has you covered. The Mi 3 and Mi 4, featuring a Snapdragon 800 (Mi 3) or Snapdragon 801 (Mi 4) chipset, a 5.0-inch FHD display, and a 3050mAh battery, are flagship devices from 2013/2014 known for their premium build and performance. Note: This article is for the cancro codename (Mi 3/Mi 4), not to be confused with other Xiaomi models like Mi 4i (ferrari), Mi 4c (libra), or Mi 4s (aqua).
⚠️ Essential Pre-Flash Checklist
Flashing can lead to errors if not done correctly. Complete this checklist to ensure a smooth process. All data will be wiped, so a backup is critical.
- ✅ Full Data Backup: Save photos, contacts, and files to Mi Cloud, Google Drive, or a PC to prevent data loss.
- ✅ Charged Battery: Ensure your Mi 3/Mi 4 has at least 60% battery to avoid interruptions during flashing.
- ✅ Windows PC: The Mi Flash Tool requires a Windows operating system.
- ✅ Original USB Cable: Use a high-quality USB cable (Micro-USB for Mi 3/Mi 4) for a stable connection to your PC.
- ✅ Unlocked Bootloader: Flashing requires an unlocked bootloader. Use the official Mi Unlock Tool (expect a 7-15 day waiting period).
- ✅ Required Software: Install the latest Mi Flash Tool and Xiaomi USB Drivers.
Understanding the Firmware: Types and Regions
Selecting the correct firmware is crucial to avoid bricking your Mi 3/Mi 4 (cancro). The cancro codename applies to both the Mi 3 (Snapdragon 800) and Mi 4 (Snapdragon 801), which share similar hardware, but ensure the ROM matches your specific model for full compatibility.
- Fastboot ROM (.tgz): A full factory image for Mi Flash Tool, ideal for unbricking or reverting to stock MIUI.
- Recovery ROM (.zip): Used with custom recoveries like TWRP for installing custom ROMs like Xiaomi.eu.
- Region Codes:
- CNFI/CNFA: China version, optimized for local networks but may lack Google Play services.
- MIFA: Global version with Google services and multi-language support.
- EUXM: Xiaomi.eu version, a debloated MIUI ROM with Google services and multi-language support.
Official Firmware Downloads for Mi 3/Mi 4 (cancro)
These firmware files are sourced from Xiaomi’s official servers or trusted repositories for reliability and security. Ensure you download ROMs for the cancro codename to avoid compatibility issues.
| Region | MIUI Version | Android | Release Date | Download Link |
|---|---|---|---|---|
| China (CNFI) | V10.1.1.0.MXDCNFI | 6.0 | 2018-10-10 | Fastboot ROM |
| Global (MIFA) | V9.5.7.0.MXDMIFA | 6.0 | 2018-08-15 | Fastboot ROM |
| EU (EUXM) | V9.5.1.0.MXDCNFA | 6.0 | Unknown | Recovery ROM |
Note: The China ROM (V10.1.1.0) is newer than the Global and Xiaomi.eu ROMs (V9.5.x). For Google services and multi-language support, the Global or Xiaomi.eu ROM is recommended.
TWRP Recovery for Mi 3/Mi 4 (cancro)
To flash custom ROMs or recovery ROMs via TWRP, install the TWRP custom recovery specific to the Mi 3/Mi 4 (cancro).
- TWRP Recovery: TWRP-3.7.0_9-0-cancro – Official TWRP image from TWRP’s site, recommended for the latest compatibility. For updates, check TWRP’s official site or XDA Forums.
How to Install TWRP:
- Download the TWRP .img file and rename it to
recovery.img. - Boot your Mi 3/Mi 4 into Fastboot mode (Volume Down + Power).
- Connect to your PC and open a command prompt.
- Flash TWRP by running:
fastboot flash recovery recovery.img. - Boot into recovery:
fastboot boot recovery.img.
Warning: Do not use a TWRP image for other devices (e.g., ferrari, libra, or aqua), as it will brick your cancro device. Verify that the TWRP version is cancro-specific.
Recommended Custom ROMs
Custom ROM support for the Mi 3/Mi 4 (cancro) is moderate due to the Snapdragon 800/801 chipsets, which were flagship-grade at release but have limited community development today. The Xiaomi.eu ROM is a primary option for a refined MIUI experience.
- Xiaomi.eu ROM: V9.5.1.0.MXDCNFA Based on Android 6.0 – Offers a lightweight, optimized MIUI experience with Google services.
- LineageOS: Check LineageOS or XDA Forums for unofficial builds like LineageOS 14.1 (Android 7.1) or 15.1 (Android 8.1). Support is limited, and features like the camera may not work fully due to the older chipsets.
How to Flash: Step-by-Step Instructions
Choose the flashing method based on your firmware type: Fastboot for official .tgz files or Recovery for custom .zip files.
Method 1: The Fastboot Method (Official Stock ROMs)
- Unzip the Firmware: Extract the .tgz file using 7-Zip to obtain a folder with an “images” subfolder and flash scripts.
- Launch Mi Flash Tool: Open the Mi Flash Tool with administrator privileges on your Windows PC.
- Enter Fastboot Mode: Power off your Mi 3/Mi 4, then press and hold Volume Down + Power until the Fastboot logo appears.
- Connect to PC: Plug your phone into your PC using a Micro-USB cable.
- Load Firmware: In Mi Flash Tool, click “select” and choose the extracted firmware folder. Click “refresh” to detect your device.
- Choose Flash Option: Select “clean all” for a complete reset (recommended for stability). Avoid “clean all and lock” unless you’re certain of the ROM’s region compatibility.
- Start Flashing: Click “flash” and wait 5-10 minutes. Do not disconnect the phone.
Troubleshooting Tip: If Mi Flash Tool fails to detect your Mi 3/Mi 4, try reinstalling the Xiaomi USB Drivers or switching to a USB 2.0 port for better connectivity.
Method 2: The Recovery Method (Custom ROMs)
- Install TWRP: Ensure TWRP is installed using the provided TWRP-3.7.0_9-0-cancro image.
- Transfer ROM: Copy the .zip ROM file (e.g., Xiaomi.eu) to your phone’s internal storage or an SD card.
- Boot into Recovery: Power off your phone, then press Volume Up + Power until the TWRP logo appears.
- Wipe Data: In TWRP, go to “Wipe” > “Advanced Wipe” and select Dalvik/ART Cache, Cache, and Data. Swipe to confirm.
- Install ROM: Return to the main menu, tap “Install,” select the .zip file, and swipe to flash.
- Reboot: Reboot to system after installation completes.
After the Flash: First Boot and Setup
The first boot after flashing may take 10-15 minutes as the system initializes. Don’t interrupt if it seems stuck on the Mi logo. Once booted, follow the setup wizard and restore your data from your backup.
Device-Specific Q&A for the Mi 3/Mi 4 (cancro)
- Q1: Why does my Mi 3/Mi 4 experience system lag? A: System lag can result from bloatware or heavy apps taxing the Snapdragon 800/801. Flashing the latest China ROM (V10.1.1.0) or Xiaomi.eu ROM can improve responsiveness.
- Q2: How can I fix battery drain on my Mi 3/Mi 4? A: Battery drain may stem from background processes or outdated firmware on the 3050mAh battery. Flashing a clean stock ROM or the debloated Xiaomi.eu ROM can optimize power efficiency.
- Q3: Will the Mi 3/Mi 4 receive Android 7 or newer? A: The cancro variant is officially capped at Android 6.0 with MIUI 10. Unofficial builds like LineageOS 14.1 (Android 7.1) or 15.1 (Android 8.1) may be available on XDA, but support is limited due to the older chipsets, with potential issues in features like the camera.
- Q4: I flashed a ROM for ferrari or libra on my cancro device and it’s bricked. What do I do? A: If your device is in EDL mode (Qualcomm HS-USB QDLoader 9008), use Mi Flash Tool with the correct cancro Fastboot ROM (e.g., V10.1.1.0.MXDCNFI). Select “clean all” to restore the device. Seek help on XDA Forums if issues persist.
