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File Version : V4.50 built by: WinDDK
Description : Sony Ericsson Device 1029 USB WMC Device Management Driver
Copyright : Copyright (c) 1997-2009 MCCI Corporation
Product Version : V4.50
Product Name : Sony Ericsson Device 1029 USB WMC Device Management
Company Name : MCCI Corporation
Internal Name : s1029mgmt.sys
File Size: 139304 byte(s) 136.40 KB
MD5 : e0fd4f4f42b76e910cc4295c97aa30ba
SHA1: 1F0B1AA536758D4E6D7902FAD981CEFDA7AD9A63

Download SD8686.SYS
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How to Install SD8686.SYS
Repair Sys ProblemsFixing a corrupted or missing SD8686.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.