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File Version : 1, 3, 16, 1
Description : SK Telecom USB OBEX Driver
Copyright : Copyright(c) SK Telecom All right reserved.
Product Version : 1, 3, 16, 1
Product Name : UniUSB Driver
Company Name : Ubipartner Inc.
Internal Name : SKTOBEX.SYS
File Size: 16384 byte(s) 16.0 KB
MD5 : 3b4aa5111bdb81806df5bdaa01841f7f
SHA1: EF6C475258EA631578CC2A313929A0A58551A507

Download si3531.sys
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How to Install si3531.sys
Repair Sys ProblemsFixing a corrupted or missing si3531.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.