The ZTE Blade L210 is an ultra-budget smartphone designed for the Russian market, focusing on core functionality and accessibility. To ensure a smooth user experience on its entry-level hardware, it runs on the optimized Android 10 (Go edition). The device is powered by a UNISOC (formerly Spreadtrum) SC7731E chipset, making it a capable 3G device for calls, messaging, and light applications. This guide provides the official stock ROMs (.pac files) for the Russian variant, which are essential for unbricking the device, fixing software bugs, or removing a Google FRP lock.
Important: This firmware is specifically for the ZTE Blade L210 (Russian variant). The flashing process for UNISOC/Spreadtrum devices is very specific and requires the correct tools. Flashing this on a different regional model may cause network issues or brick the device.
Quick Device Specs
- Device: ZTE Blade L210
- Release year: 2020
- Chipset: UNISOC SC7731E (3G connectivity)
- Display: 6.0″ TFT Display
- Battery: 2600 mAh
- Original OS: Android 10 (Go edition)
Required Downloads
To flash a Spreadtrum/UNISOC device, you will need the specific drivers and flashing tool listed below.
| File / Tool | Download Link |
|---|---|
| SPD Upgrade Tool | Download Latest Version |
| Spreadtrum/UNISOC USB Drivers | Download Drivers |
Stock ROM (Firmware)
| Region / Carrier | Build | Android | Type | Download | Chipset |
|---|---|---|---|---|---|
| Russia (RU) | V1.3 | 10 (Go) | SPD .pac Firmware | Download | UNISOC/SPD |
| Russia (RU) | V1.10 | 10 (Go) | SPD .pac Firmware | Download | UNISOC/SPD |
How to Flash (SPD Upgrade Tool)
This method is for restoring the official stock firmware and will erase all data on your device.
- Install Drivers: Download and extract the Spreadtrum/UNISOC USB Drivers. Run the installer. You may need to disable Driver Signature Enforcement in Windows for the drivers to install correctly.
- Extract Tools & Firmware: Extract the SPD Upgrade Tool and your chosen firmware .zip file into separate folders on your desktop. Inside the firmware folder, you will find a large .pac file.
- Launch the Tool: Open the SPD Upgrade Tool folder and run UpgradeDownload.exe as an administrator.
- Load Firmware: Click the first Gear icon (Load Packet). Navigate to the extracted firmware folder and select the .pac file. It may take a minute for the file to be loaded and verified by the tool.
- Start Flashing Process: Click the Play icon (Start Downloading). The status will change to “Waiting”.
- Connect Your Phone: Power off your ZTE Blade L210 completely. Now, press and hold the Volume Down button, and while holding it, connect the phone to your PC with a USB cable.
- Begin Flashing: The tool will detect the phone, and the progress bar will start moving. You can release the Volume Down button at this point.
- Finish: The process will take several minutes. Once it’s finished, you will see a green “Passed” message. You can now disconnect your phone and power it on. The first boot may take longer than usual.
Device-Specific Troubleshooting for ZTE Blade L210
- Correct Driver Installation: The most common failure point is incorrect drivers. You must install the Spreadtrum/UNISOC drivers. On modern Windows, this often requires disabling ‘Driver Signature Enforcement’ first. Your PC should recognize the phone as a ‘SPRD U2S Diag’ port when connected correctly for flashing.
- Using the “Boot Key”: To get the tool to recognize your phone, you must use the boot key. Power the phone off completely. Press and hold the Volume Down button, and while holding it, connect the phone to your PC with the USB cable. Release the button only after the flash process begins.
- Fixing Google FRP Lock: If you are locked out of your phone after a factory reset due to Google’s Factory Reset Protection (FRP), flashing this stock ROM is a common method to remove the lock. The standard flashing process will completely reset the device and the locked account.
- 3G Only Device: Please remember that the ZTE Blade L210 is a 3G-only smartphone. If you are experiencing no network service after flashing, ensure you are using a SIM card and are in an area that still has 3G network coverage, as many carriers are phasing out 3G support.
FAQs
Q1. What is Android 10 (Go edition)? Android Go is a lightweight version of the Android operating system, specifically designed by Google to run smoothly on entry-level smartphones with 2GB of RAM or less. It includes optimized “Go” versions of popular Google apps to save space and ensure good performance.
Q2. 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, modem, etc.—in a single, integrated file for flashing with tools like the SPD Upgrade Tool.
Q3. 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.
