1.If you are not using status monitor applications, then you can upgrade to UPD 126.96.36.199. If you are using status monitor applications, then use only UPD 188.8.131.52. 2.If you are using a private print driver, then check the release notes before installing this version to avoid losing specific fixes for your private print driver. For detailed information about new changes for this release , please refer to Technical White Paper under Universal Print Driver page or the Release Notes section. Microsoft Certified Windows Server 2003, Vista, Server 2008, Windows 7, Windows 8, Windows 8.1 and Windows 10 32 bit PCL5e Emulation Universal system driver. Microsoft Certified Windows Server 2003, Vista, Server 2008, Windows 7, Server 2008 R2, Windows 8, Server 2012, Windows 8.1, Windows Server 2012 R2, Windows 10 and Windows Server 2016 64-bit PCL5e Emulation Universal system driver.