: Do not disconnect the cable until the tool shows "PASS" or "Completed." Troubleshooting & Alternatives

This guide is for educational purposes. Modifying phone firmware may cause permanent damage. The author is not responsible for any bricked devices. Proceed at your own risk.

Before you begin, download the necessary software and drivers.

Click SET MODEL and select the configuration file, usually named C3520_Citrus_Setting_v00.mdl . Load Firmware Files:

Instead, for repair/software issues on this phone: