Sony Support

Sierra Wireless WWAN Modem Software (Windows 7 64bit)

Applicable Models

IMPORTANT: This file is only for use with the models identified. Not all models are sold in all countries.

This information is for the following models:

  • VPCZ2390X

About this download

Benefits and improvements

This utility installs the originally shipped version of the Sierra Wireless WWAN Modem software.

This driver also resolves the yellow exclamation point error Device Manager Exclaimation Point Error that may appear in the Device Manager window, under Network adaptors, next to MC7750 which indicates that the driver is not installed for that device.

System Requirements

Operating Systems

  • Windows® 7 64-bit

File Info

File Name

  • EP0000551420.exe

File Version

  • 11.8.1005.7

File Size

  • 11.6 Mb

Release Date

  • 01-09-2012

Before You Start


Important Notes

NOTE: This package is for Wireless WAN models that have the LTE module installed.

  • During the installation of this file, be sure that you are logged in as the Administrator or as a user with Administrative rights.
  • To ensure that no other program interferes with the installation, save all work and close all other programs. The Taskbar should be clear of applications before proceeding.
  • It is highly recommended that you print out these instructions for use as a reference during the installation process.

Download & Install


Download and Installation Instructions

  1. To ensure that no other program interferes with the installation, save all work and close all other programs. The Taskbar should be clear of applications before proceeding.
  2. Download the EP0000551420.exe file to a temporary or download directory (please note this directory for reference).
  3. Go to the directory where the file was downloaded and double-click the EP0000551420.exe file to begin the installation.
  4. At the "User Account Control" screen, click "Yes".
  5. If the "Select Language" screen appears, select the language you wish to use, and then click "OK".
  6. At the "Select Country" screen, select the country for this installation, and then click "Next".
  7. At the "Sierra Wireless WWAN Modem Ver. 11.8.1005.7" screen, click "Next".
  8. At the "License Agreement" dialog, read the agreement, then, if you agree, click "I Agree" to continue with the installation.
  9. At the "Finish" screen, click "Finish".
  10. At the "This system must be restarted to complete the installation" screen, click "OK" to restart the computer.

After the computer restarts, the installation of the Sierra Wireless WWAN Modem software is complete.