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File version : built by: WinDDK
Description : Csr Bluetooth USB Driver
Copyright : Copyright ? Cambridge Silicon Radio Limited, 2010-11Cambridge Silicon Radio Limited
Product Version :
Product Name : Harmony
Company Name : Cambridge Silicon Radio Limited
Internal name : csrusb
File Size: 47296 byte(s) 46.192 KB
MD5 : 19a0b8f1ce67e5e0e0cdf315f9da29d6
SHA1: 96C55894CD6499D7FDE8EF4577C9C05F06B979DC

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