USB Drivers of FX30 and MOBITEK S80 Have Conflict — Bad_pool_caller

Problem: the USB Drivers for both FX30 and MOBITEK S80 cannot be installed in the same machine. Otherwise the below blue screen error will appear when trying to connect MOBITEK S80 3G Modem to the PC/machine.


Solutions: there are 3 solutions to choose:

  1. reboot Windows into “last known good configuration” (source:;
  2. run system restore to restore Windows to the a date before FX30 USB driver was installed; or
  3. uninstall FX30 USB driver.

Fail to Get MOBITEK S80 to Work in USB port in VirtualBox

  • VirtualBox version: 6.1
  • OS in virtual machine: Windows Server 2012 64-bit

This method mentioned in  was used to test the USB driver of MOBITEK S80 3G Modem in the virtual machine (Windows Server 2012 64-bit)

After installing Extension Pack in VirtualBox, USB 2.0 and USB 3.0 shown in the USB list

When virtual machine was started, the “Sierra Wireless” device was shown in the list:-

The COM PORT (COM6) appeared in “Device Manager”:-

However, in Hyper Terminal the “AT-OK” test could not be performed because it seems like the Hyper Terminal only catch the physical COM PORT of the MOBITEK S80, but the connection is not actually established with the modem. Nothing can be typed in Hyper Terminal to test the connection.


The same problem happens in Linux Mint running in VirtualBox

  • VirtualBox version: 6.1
  • OS in virtual machine: Linux Mint 17 ‘Qiana’ Cinnamon 64-bit

Mobitek S80 that attached to Linux Mint running in VirtualBox can be detected when running the “dmesg | grep tty” command in Linux Mint’s Terminal

But each interface ttyUSB0 – ttyUSB4 which MobitekS80 is attached to cannot be tested with AT command in CuteCom. CuteCom will be freezed when the AT command entered.

How to Set-Up MOBITEK S80 SMS Modem with WinPower UPS software

Applies to:

MOBITEK® S80 for SMS Over 3G Network


  1. Connect your laptop/desktop to UPS and MOBITEK S80 Modem to laptop/desktop. Open Winpower UPS software. Go to System menu -> Act as Administrator and enter the password. The default password is “Administrator“. This step is important in order to configure Winpower software setting.

    To change the administrator password (optional), go to System menu -> Modify Administrator Password and enter the new password for administrator.
  2. Go to System menu -> Auto Search Device to search for UPS device automatically.

    Wait for the UPS to be searched.

    When found, the UPS device will be shown in the list. Double-click on it to see the UPS device status.
  3. Go to Tools menu -> SMS Setting to configure the SMS notification for UPS events.
  4. In SMS Setting, set the Com Port for MOBITEK S80 Modem, the Baud Rate to “115200“, and the Format of phone number to “Without National Code“. Enter the phone number for the notification to be sent, click Add button and select the phone number in the list. After that select the abnormal event in the event list that you want to be notified for. Click Test button to test the SMS sent successfully or not. If successful, click OK button.

How to Search for the IP Address of MOBITEK S80 3G Modem

There are 2 methods:-

  1. USR-TCP


    Click on ” Search in LAN” and you will find your modem in the “Device list in the Net”.Once you click on the modem which is visible on that list, you can view the parameters (including the IP address) of MOBITEK S80 3G MODEM.
  2. Using USR-VCOM
    Once done with the USR-VCOM setup, click on “Search” and select T24. 

    The modem that been detected by the USR-VCOM will be shown as below with the IP address: