The ZTE Blade L110 (model C570) is an ultra-compact 3G smartphone from 2016 designed for absolute accessibility and basic communication. With its pocket-friendly 4.0-inch display and dual-SIM capabilities, it was a popular entry-level choice in many markets. The device is powered by a UNISOC (Spreadtrum) processor running Android 5.1 Lollipop. This guide provides the official stock ROM (.pac file), the definitive tool for reviving a bricked device, fixing software glitches, or performing a complete factory restore.
Important: This firmware is specifically for the ZTE Blade L110 (C570). As a UNISOC/Spreadtrum device, it requires the SPD Upgrade Tool for flashing. Flashing this on a different model will cause a hard brick. This process will erase all data on your device.
Quick Device Specs
- Device: ZTE Blade L110 (C570)
- Release year: 2016
- Chipset: UNISOC SC7731G (3G connectivity)
- Display: 4.0″ TFT Display
- Battery: 1400 mAh
- Original OS: Android 5.1 (Lollipop)
Required Downloads
To flash a Spreadtrum/UNISOC device, you will need the specific drivers and flashing tool. You can find the downloads for these in our main guide linked below.
- SPD Upgrade Tool or SPD Research Tool
- Spreadtrum/UNISOC USB Drivers
Stock ROM (Firmware)
| Build Date | Android | Type | Download | Chipset |
|---|---|---|---|---|
| 2018-01-18 | 5.1 | SPD .pac Firmware |
Download | UNISOC/SPD |
How to Flash the Stock Firmware
Restoring your ZTE Blade L110 to its original software is done with a Windows PC and the SPD Upgrade Tool. The core steps involve installing the correct Spreadtrum drivers, loading the single .pac firmware file into the tool, and connecting your phone while it is powered off and you’re holding the Volume Down key to start the process.
For the complete, step-by-step guide with pictures and download links for the tools, please see our main pillar article: How to Use the SPD Upgrade Tool to Flash Your Smartphone.
Device-Specific Troubleshooting for ZTE Blade L110
- PC Not Detecting the Phone? Check Drivers: The most common problem is a driver issue. The SPD Upgrade Tool will not see your phone if the drivers aren’t installed correctly. You must install the Spreadtrum VCOM drivers, which often requires disabling ‘Driver Signature Enforcement’ in Windows first.
- Using the Correct Boot Key Sequence: The phone must be fully powered off. Click the “Start” button in the flash tool first. Then, press and hold the Volume Down button on your phone and connect the USB cable. Do not release the button until you see the ‘Downloading’ progress bar appear.
- Stuck on Google Account (FRP Lock): If you are stuck on the Google account setup screen after a factory reset, flashing this stock ROM will completely wipe the device and remove the FRP lock, allowing you to set it up from scratch.
- 3G Network Decommissioning: Be aware that the Blade L110 is a 3G-only device. Many mobile carriers around the world are shutting down their 3G networks. After flashing, if you have no signal, it may be because 3G service is no longer available in your area.
FAQs
Q1. My phone only has 512MB of RAM and is very slow. Will this help?
Yes. For a device with very limited RAM, a clean flash of the stock ROM is the best way to optimize performance. It removes all accumulated junk files and unnecessary background processes, restoring the phone to its original speed.
Q2. Can I upgrade this phone to a newer Android version?
No. The ZTE Blade L110’s hardware is too old and limited to support any Android version beyond the 5.1 Lollipop it was released with. There are no official updates and a custom ROM community for this device is virtually non-existent.
Q3. Will this unlock my phone from its network carrier?
No. Flashing the stock firmware restores the phone’s original software, but it does not remove the SIM/network lock put in place by a carrier.
Q4. What is a .pac file?
A .pac file is a packed firmware file used for Spreadtrum/UNISOC chipsets. It contains all the necessary partitions—system, boot, recovery, etc.—in a single, integrated file for flashing.
