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File version : V5.28 built by: WinDDK
Description : KYOCERA USB Composite Device SY31 Driver
Copyright : Copyright (c) 1997-2011 MCCI
Product Version : V5.28
Product Name : KYOCERA USB Composite Device SY31
Company Name : MCCI
Internal name : sy31bus.sys
File Size: 159816 byte(s) 156.72 KB
MD5 : e498afbe5f7c16fdc988ddf0925fccb8
SHA1: EF8C32636D9B4BC1E2929A0591A1BC88F65F08E6

Download sy31bus.sys
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How to Install sy31bus.sys
Repair Sys ProblemsFixing a corrupted or missing sy31bus.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.