If you are trying to recover or flash a device with a similar identifier:
: The software should detect the device and start the automatic flashing process. Wait until the progress bar turns green or displays a "All files complete" message. c3520 flash loader 75 4 csc v02 citrus 218l link
From the structure, the most plausible scenarios are: If you are trying to recover or flash
: Specifically, the Sunstone V5.00.0.1 WHQLed drivers or similar to ensure the PC recognizes the phone in DFU mode. c3520 flash loader 75 4 csc v02 citrus 218l link