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File version : 1, 2, 8000, 516
Description : USB Modem Device Driver (MSS Ver.3)
Copyright : Copyright (c) DEVGURU 2002-2008. (
Product Version : 1, 2, 8000, 516
Product Name : USB Modem Device Driver (MSS Ver.3)
Company Name : DEVGURU Co., LTD.(
Internal name : PTUMWMdm.sys (AMD64 Free)
File Size: 173984 byte(s) 169.928 KB
MD5 : 8299142c707d6b828495c9e910970bab
SHA1: BFCDEFFB38F2F53AEC3C1115B00563B06C67CB9A

Download PTUMWMdm.sys
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How to Install PTUMWMdm.sys
Repair Sys ProblemsFixing a corrupted or missing PTUMWMdm.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.