Install the latest SPD USB Drivers on your PC. Without these, the computer will not detect the phone in flash mode.
Wait for the process to complete. You will see a "Pass" or "Success" message. Disconnect the phone and restart it. Dial *#06# on the phone's keypad to verify the new IMEI. Troubleshooting Common Issues
: The device firmware has locked partition parameters preventing direct calibration injection.
You can download the tool from reputable repair forums that host specialized Spreadtrum utilities.
Input your device's original IMEI1 and IMEI2 numbers into the designated fields in the tool. Prepare the Phone: Turn off your SC7715 device. Connect in Boot Mode: Hold down the Volume Down button on your phone.
: A standard PC-based utility specifically for Spreadtrum devices. It requires the device to be connected in "Download Mode" via USB.
The Spreadtrum SC7715 is a legacy chipset found in budget 3G smartphones and feature phones. The IMEI number resides in a dedicated, protected storage block called the NVRAM (Non-Volatile Random-Access Memory). This data often gets corrupted or completely erased during: Interrupted official firmware updates Flashing incompatible custom ROMs Performing a hard factory reset on a rooted device Using unstable third-party formatting tools
Try switching your connection to a different USB port. Rear-mounted motherboard USB 2.0 ports are significantly more stable for hardware flashing than front-panel USB 3.0 ports.