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File Version : V4.18
Description : Motorola 1xEV-DO Handset Diagnostic Serial Port Device Driver
Copyright : Copyright (c) MCCI 1997-2003
Product Version : V4.18
Product Name : Motorola 1xEV-DO Handset Diagnostic Serial Port
Company Name : MCCI
Internal Name : mo_aserd.sys
File Size: 64128 byte(s) 62.640 KB
MD5 : 3ce163d7b9f16a5c5158ab6ab1c686ca
SHA1: F0D0F7FCFB9E209F1A96B3B5729237C56304B617

Download MN720-50.SYS
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How to Install MN720-50.SYS
Repair Sys ProblemsFixing a corrupted or missing MN720-50.SYS error is an easy process with a few steps. Open the zip-file you downloaded.Extract the .sys file to a location on your computer. We recommend you to unzip the file to the directory of the program that is requesting the file.
If that doesn't work, you will have to extract the file to your system directory.
By default, this is C:/WINNT/system32/drivers (Windows NT/2000).
or C:/Windows/system32/drivers (Windows XP, Vista, 7).
Make sure overwrite any existing files (but make a backup copy of the original file)
That should be it. Although not necessary you can reboot your computer as well.