Switch USB Modem ZTE from USB DISK/FLASH to MODEM

1. Connect modem to Windows machine
2. Connect to modem (COM port) with terminal (PuTTY or other) (115200bps, Data bits: 8, Parity: None, Stop bits: 1, Flow Control: None).
3. Send AT commands:

   AT+ZOPRT=5
   
   AT+ZCDRUN=8