SAMSUNG Proprietary-Contents may change without noticeArray course control4-7This Document can not be used without Samsung's authorizationF Trouble Shooting1. “PDA Device not found” messageF Make sure that your device is connected a host computer by USB DATA Link cable.2. “Port Open Failed” message or application hangF After you install “phone USB driver (Samsung CDMA Modem)” at first time, you may see “Portopen failed…” message or application hang while downloading a phone image. If so, terminate the application and then try the download again.F If USB port is changed, at first time you may see “Port open failed…” message or applicationhang. If so, terminate the application and then try the download again.F If USB cable to the mobile device is not connected tightly, you may see “Port open failed…” message or application hang. If so, terminate the application and then try the download again..F If you always see “port open failed” message or application hang,1. When failed application is activated, go to the device manager, remove the SAMSUNG CDMA Modem and SAMSUNG USB Composite Device.2. Rename C:\WINDOWS\system32\drivers\Modem.sys to other name. (ex. Modem-.sys)3. Go to control panel->program add/remove, and then remove Samsung CDMA Modem driver or Samsung USB driver(MCCI)4. Restart your PC.5. Install attached SAMSUNG CDMA Modem_4.346. Try the download again.3. “Write Failed” messageF If battery level is low, use charged battery and try again.- Reference -How to deal with the an error in the computer USB port of the computer.Symptom: Device is not identified after connecting it.Cause: The device is connected before the previous connection is complete. All devices should beconnected one by one. Otherwise, an error may occur in the computer USB port of the computer.Solution:Proceed with the following action in order only when the previous action does not work.