ALTERA DOES NOT WARRANT THAT THE FUNCTIONS CONTAINED IN THIS PATCH WILL MEET YOUR REQUIREMENTS, OR THAT THE OPERATION OF THIS PATCH WILL BE UNINTERRUPTED OR ERROR-FREE. //**************************************************************** quartusii-15.0-0.21-readme.txt Readme file for Quartus II 15.0 Patch 0.21 Copyright (C) Altera Corporation 2015 All right reserved. Patch created on June 16 2015 Patch Case#: 294749 //**************************************************************** Description: This patch fixes SVGT 25G serial loopback issue. Caution - You must either have previously installed the Quartus II 15.0 software or must install the Quartus II 15.0 software before installing this patch. Otherwise, the patch will not be installed correctly and the Quartus II software will not run properly.