: If you are looking to change the Web UI or unlock a carrier-locked device, specialized firmware versions (such as Kar-tel, Jazz, or Airtel variants) are often hosted on community forums like XDA Developers or file repositories like GSM Hosting Files . How to Update Your Firmware

: Ensure you have the ZTE USB drivers installed on your PC.

Log in using the default password (usually , unless changed). Navigate to Settings > Device Settings > Update Management .