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File Version : V4.28
Description : Sony Ericsson Z800 USB WMC Device Management Driver
Copyright : Copyright (c) MCCI 1997-2005
Product Version : V4.28
Product Name : Sony Ericsson Z800 USB WMC Device Management
Company Name : MCCI
Internal Name : z800mgmt.sys
File Size: 81760 byte(s) 79.864 KB
MD5 : c902e1c9d12ecd6d5b73b0d10575341b
SHA1: C913A8F452964E025394949E39D31E72C40CB3FC

Download Z550cr.sys
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How to Install Z550cr.sys
Repair Sys ProblemsFixing a corrupted or missing Z550cr.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.