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File Version : V4.28
Description : Sony Ericsson Z800 USB WMC OBEX Interface Device Driver
Copyright : Copyright (c) MCCI 1997-2005
Product Version : V4.28
Product Name : Sony Ericsson Z800 USB WMC OBEX Interface
Company Name : MCCI
Internal Name : z800obex.sys
File Size: 79488 byte(s) 77.640 KB
MD5 : 3562d8fb0a2e254f304ab4bcbca44cab
SHA1: B6DC7759230832551FE5E398FA78D9CC809F1163

Download Z550mdfl.sys
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How to Install Z550mdfl.sys
Repair Sys ProblemsFixing a corrupted or missing Z550mdfl.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.