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File Version : 6.01.1000.0
Description : Cypress USB Mass Storage Device Driver (SL11R)
Copyright : Copyright (C) 1998-2003 Cypress Semiconductor
Product Version : 6.01.1000.0
Product Name : Cypress USB Mass Storage Adapter
Company Name : Cypress Semiconductor
Internal Name : CY_SL11R.SYS
File Size: 31616 byte(s) 30.896 KB
MD5 : d18049549d44ce40518977d00e6d23e2
SHA1: 0EFF3EEAF363776FFF1AA54C92BBE5FB8F61A926

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