From the home screen, tap the Menu key.
Tap System settings.
Scroll to and tap System updates.
Tap Update Firmware.
The handset will check for firmware updates.
If a firmware update is available, follow the prompts to install the update.
Otherwise, tap OK.
Tap Update ZTE Software.
If an update is available, follow the prompts to update the system software.
The software is now up to date.