Xiaomi Mi 4i (ferrari) Firmware Flash File Download [Stock ROM]
Xiaomi Mi 4i (codename ferrari) was a significant international-focused device featuring a vibrant 5-inch Full HD display, Snapdragon 615 processor, and sleek polycarbonate design. If your device is experiencing overheating issues, performance throttling, or display problems, flashing the correct stock firmware can help restore stability. This page provides official fastboot ROMs for both Chinese and Global variants, a optimized Xiaomi.eu ROM, and the latest TWRP recovery.
Important Note: The Mi 4i (ferrari) is particularly known for its overheating issues due to the Snapdragon 615 chipset and subsequent performance throttling. A clean flash can help optimize thermal management. Always confirm your codename is ferrari before flashing.
Quick Device Specs
- Device: Mi 4i (ferrari)
- Release year: 2015
- Chipset: Qualcomm Snapdragon 615 (MSM8939)
- Display: 5.0″ IPS LCD, 1080p (441 PPI)
- Battery: 3120 mAh (Non-removable)
- Key Feature: Sunlight Display technology, compact design
- Camera: 13MP with dual-tone flash, 5MP front
- Original OS: Android 5.0, MIUI 6
- Final Official MIUI: MIUI 9 (Android 5.0 Lollipop)
Required Downloads
| File / Tool | Download Link |
|---|---|
| Xiaomi Mi Flash Tool | Download Latest Version |
| Qualcomm QDLoader Drivers | Download Drivers (For EDL mode) |
| Bootloader Unlock Tool | Official Mi Unlock Page (Mandatory) |
| ADB and Fastboot Tools | Download from Google |
Fastboot ROMs & Tools
| Type | Build / Version | Android | Release Date | Download | Size |
|---|---|---|---|---|---|
| China Stable (CN) | V7.5.1.0.LXICNDE | 5.0 (Lollipop) | 2016-05-23 | Download | ~1.1 GB |
| Global Stable | V9.2.3.0.LXIMIEK | 5.0 (Lollipop) | 2018-04-14 | Download | ~1.1 GB |
| Xiaomi.eu (Custom) | V7.5.1.0.LXICNDE | 5.0 (Lollipop) | — | Download | ~750 MB |
| TWRP Recovery (Official) | 3.7.0_9-0 | — | — | Download | ~15 MB |
How to Flash via Fastboot (Mi Flash Tool)
- Unlock your bootloader using the official Mi Unlock tool. This is a mandatory first step.
- Extract the downloaded .tgz firmware file to a folder on your PC.
- Open Mi Flash Tool. Click Select and choose the extracted ROM folder.
- With your phone powered off, boot into Fastboot mode (Hold Volume Down + Power). Connect it to the PC.
- In Mi Flash Tool, choose the clean all option. Avoid “clean all and lock” unless you are absolutely certain you are flashing the correct stock ROM for your device’s original region.
- Click Flash and wait for the process to complete. The first boot may take 5-10 minutes.
FAQs
Q1. Why does my Mi 4i overheat and throttle performance so easily?
The Snapdragon 615 is notorious for thermal issues due to:
- Inefficient 28nm manufacturing process
- Octa-core Cortex-A53 architecture that generates significant heat
- Poor thermal design in the compact polycarbonate body
- Aggressive CPU scheduling that uses all cores simultaneously
A clean flash can help optimize thermal management, but some heating is inherent to this chipset.
Q2. What is Sunlight Display technology and why isn’t it working properly?
Sunlight Display was a feature that:
- Automatically adjusted contrast and brightness in bright conditions
- Enhanced visibility in direct sunlight
- Used specialized algorithms for outdoor readability
If it’s not working, possible causes include:
- Software corruption (fixed by clean flash)
- Ambient light sensor issues
- Display calibration problems
Check Settings > Display > Sunlight display after flashing to ensure it’s enabled.
Q3. Can I upgrade to newer Android versions on my Mi 4i?
The Snapdragon 615 has limited custom ROM support due to its thermal issues and lack of developer interest. Options include:
- LineageOS 13 (Android 6.0) – Most stable
- Some Android 7.1 builds – May have stability issues
- MIUI 9 based on Android 5.0 (provided here) is the most reliable option
Custom ROMs may exacerbate overheating issues, so the stock-based Xiaomi.eu ROM is recommended.
Q4. Why is my battery life poor despite the 3120mAh capacity?
Battery life is affected by:
- Snapdragon 615’s power inefficiency
- Heating issues causing additional power drain
- Battery degradation over time
- High-resolution display consuming significant power
A clean flash can help optimize power management, but expect moderate battery life at best.
Troubleshooting (Ferrari-Specific)
- “Antirollback check error” in Mi Flash Tool: The device has Anti-Rollback (ARB) protection. You cannot flash older ROM versions. Check your current ARB version with
fastboot getvar antiand ensure you’re flashing a ROM with the same or higher version number. - Overheating and performance throttling: This is characteristic of the Snapdragon 615. Mitigate by: 1) Using battery saver mode, 2) Avoiding intensive tasks, 3) Keeping device cool, 4) Clean flash to optimize software thermal management.
- Device not detected in Fastboot mode: This is usually a driver issue. Install the latest ADB/fastboot drivers and try a different USB cable and port (preferably USB 2.0). Check device detection with
fastboot devicesin the command prompt. - Phone boots directly to Fastboot mode: This indicates a corrupted
boot.imgor system partition. Flash the complete stock ROM using the “clean all” option in Mi Flash Tool to restore all partitions. - Sunlight Display not working: First, ensure it’s enabled in Settings > Display. If still not working, a clean flash usually restores functionality. Check ambient light sensor functionality in hardware test mode (
*#*#6484#*#*). - Battery draining quickly: The 3120mAh battery is compromised by the inefficient chipset. If experiencing rapid drain: 1) Check battery health, 2) Clean flash to eliminate software issues, 3) Consider battery replacement if capacity has degraded significantly.
