Disclaimer: Flashing firmware will wipe all your data. It may void your warranty and carries a risk of bricking if done incorrectly. Proceed at your own risk.
If your phone is still functional, always prefer updates. Zte Blade L210 Firmware
The firmware dictates the user interface (UI) of the ZTE Blade L210. ZTE typically layers a custom skin over the stock Android system, providing a distinct visual aesthetic and additional features. For the L210, the firmware is designed to prioritize simplicity. It comes pre-loaded with essential applications and, notably, a suite of Google apps optimized for the Go edition, such as Google Assistant Go and YouTube Go. Disclaimer: Flashing firmware will wipe all your data