Xiaomi Mi 4c (libra) Firmware Flash File Download [Stock ROM]
Xiaomi Mi 4c (codename libra) was a compact flagship known for its powerful Snapdragon 808 processor, USB Type-C connectivity, and edge touch controls. If your device is experiencing performance throttling, touch screen issues, or battery problems, flashing the correct stock firmware can help restore its functionality. This page provides the official fastboot ROM for the Chinese variant and a optimized Xiaomi.eu ROM.
Important Note: The Mi 4c (libra) is often called the “plastic brother” of the Mi 4s but lacks a fingerprint sensor. It’s known for its edge touch technology and was one of the first Xiaomi devices with USB Type-C. Always confirm your codename is libra before flashing.
Quick Device Specs
- Device: Mi 4c (libra)
- Release year: 2015
- Chipset: Qualcomm Snapdragon 808 (MSM8992)
- Display: 5.0″ IPS LCD, 1080p
- Battery: 3080 mAh (Non-removable)
- Key Feature: Edge Touch technology, USB Type-C
- Camera: 13MP with phase detection autofocus
- Original OS: Android 5.1, MIUI 7
- Final Official MIUI: MIUI 10 (Android 7.0 Nougat)
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) | V10.1.1.0.NXKCNFI | 7.0 (Nougat) | 2018-10-09 | Download | ~1.5 GB |
| Xiaomi.eu (Custom) | V10.1.1.0.NXKCNFI | 7.0 (Nougat) | — | Download | ~1.0 GB |
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 is my Mi 4c overheating during normal use?
The Snapdragon 808 processor is known for thermal management issues, particularly:
- CPU and GPU generating significant heat under load
- Inefficient 20nm manufacturing process
- Limited thermal dissipation in the plastic body
- Background processes consuming resources
A clean flash can help by removing unnecessary background services, but some heating is inherent to this chipset.
Q2. What is Edge Touch technology and why isn’t it working?
Edge Touch was a unique feature that allowed:
- Taking photos by squeezing the sides
- Going back by tapping the edge
- Other gesture controls
If it’s not working, possible causes include:
- Software corruption (fixed by clean flash)
- Feature disabled in settings
- Physical damage to touch sensors
Check Settings > Additional settings > Edge touch after flashing to enable and configure.
Q3. Can I upgrade to newer Android versions on my Mi 4c?
The Snapdragon 808 has decent custom ROM support:
- LineageOS 14.1 (Android 7.1)
- LineageOS 15.1 (Android 8.1)
- Some Android 9.0 builds
However, development has slowed due to the chipset’s thermal issues. The provided Xiaomi.eu ROM based on Android 7.0 offers the best balance of stability and features.
Q4. Why is my USB Type-C connection unstable?
As one of the first USB-C devices, the Mi 4c had some early implementation issues:
- Cable compatibility problems (try different cables)
- Port wear and tear (clean the port carefully)
- Driver issues (fixed by clean flash)
- Physical port damage (may need replacement)
Use high-quality USB-C cables and avoid putting pressure on the port.
Troubleshooting (Libra-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 808. Mitigate by: 1) Using battery saver mode, 2) Avoiding intensive tasks, 3) Keeping device cool, 4) Clean flash to optimize software.
- Edge Touch not working: First, ensure it’s enabled in Settings > Additional settings > Edge touch. If still not working, a clean flash usually restores functionality. If problems persist, there may be hardware issues with the touch sensors.
- 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. - Battery draining quickly: The 3080mAh battery is small by modern standards. If experiencing rapid drain: 1) Check battery health, 2) Clean flash to eliminate software issues, 3) Consider battery replacement if capacity has degraded significantly.
