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File Version : V4.34
Description : Sony Ericsson 900i Driver
Copyright : Copyright (c) MCCI 1997-2005
Product Version : V4.34
Product Name : Sony Ericsson 900i
Company Name : MCCI
Internal Name : w900bus.sys
File Size: 58256 byte(s) 56.912 KB
MD5 : e3673efe4201c86b1313e7ec7c1610f2
SHA1: 684AA69D19B9C810430E1C6EA12B0912BC8686D9

Download w550mdm.sys
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How to Install w550mdm.sys
Repair Sys ProblemsFixing a corrupted or missing w550mdm.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.