The ZTE ConeXis A1 is an ultra-budget 3G smartphone from 2016, designed for basic functionality and first-time smartphone users. It features a compact 4.0-inch display and is powered by a UNISOC (Spreadtrum) SC7731 chipset running Android 5.1 Lollipop. This guide provides the official stock ROM (.pac file), which is essential for unbricking a device, fixing software bugs and bootloops, or removing a Google FRP lock.
Important: This firmware is specifically for the ZTE ConeXis A1. 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 ConeXis A1
- Release year: 2016
- Chipset: UNISOC SC7731 (3G connectivity)
- Display: 4.0″ TFT Display
- Battery: 1500 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)
| Region / Carrier | Build | Android | Type | Download | Chipset |
|---|---|---|---|---|---|
| Generic / Unspecified | V1.0.2 | 5.1 | SPD .pac Firmware |
Download | UNISOC/SPD |
How to Flash the Stock Firmware
Flashing the stock ROM onto your ZTE ConeXis A1 requires a Windows PC and the SPD Upgrade Tool. The process involves installing the correct UNISOC drivers, loading the .pac firmware file from the download into the tool, and then connecting your powered-off phone while holding the Volume Down key to initiate the flash.
For detailed, step-by-step instructions with screenshots and tool download links, please follow our comprehensive pillar guide: How to Use the SPD Upgrade Tool to Flash Your Smartphone.
Device-Specific Troubleshooting for ZTE ConeXis A1
- Correct Driver Installation: The most common failure point is incorrect drivers. If the tool doesn’t see your phone, you must install the Spreadtrum/UNISOC drivers, which often requires you to disable ‘Driver Signature Enforcement’ in Windows first.
- Using the “Boot Key”: To initiate the flash, power the phone off completely. Press and hold the Volume Down button, and while holding it, connect the phone to your PC. The tool should then detect it and begin the process.
- Fixing Google FRP Lock: If you’re locked out of your phone by Google’s Factory Reset Protection (FRP), flashing this stock ROM will perform a complete wipe and remove the locked account.
- 3G Only Device: Please remember that the ZTE ConeXis A1 is a 3G-only smartphone. If you experience no network service after flashing, ensure your SIM card and carrier plan support 3G networks in your area, as many carriers are shutting down their 3G networks.
FAQs
Q1. 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. Your device will still be locked to its original carrier.
Q2. Why is my phone so slow?
The ZTE ConeXis A1 is a very basic device with 1GB of RAM and an old version of Android. Over time, apps become more demanding and the system accumulates temporary files, causing significant slowdowns. A clean flash of the stock ROM is the best way to restore it to its original performance.
Q3. Can I upgrade this phone to a newer Android version?
No. This device never received official Android updates beyond its launch version of 5.1 Lollipop. Due to its very basic hardware, a community-developed custom ROM scene for it is virtually non-existent.
Q4. Will this process erase my data?
Yes. Flashing the stock ROM with the SPD Upgrade Tool will perform a full factory reset and completely wipe all personal data, apps, and settings from your device.
