Download ZTE Star 2 S2005 and G720T official firmware from the link here, and follow the provided flashing instructions to learn how to flash the stock rom.
If you notice that any of the links provided below is broken or doesn’t work, please post in comments section so we fix and update it ASAP.
Download Options
File Name: 2015061216410354.7z
Size: 731 MB
Android version: N/A
Build: 282070B1231_G720TV1.0.0B04 (Mobile Edition)
Firmware – Download
File Name: 2015061216571979.7z
Size: 841 MB
Android version: N/A
Build: 282070B0987_G720TV1.0.0B04 (Unicom version)
Firmware – Download
File Name: 2015051815112598.7z
Size: 766 MB
Android version: N/A
Build: 280190B1184_ZTE S2005V1.0.1B04
Firmware – Download
How to flash
Click here to view complete flashing instructions for any of the above firmware packages. If you have any issue with flashing, post in comments section below for assistance.