HUAWEI Y600-U20 MT6572 FIRMWARE DEAD BOOT REPAIR 100% TESTED FREE DOWNLOAD — How to flash y600-u20? Step 1: First unzip the downloaded y600-u20 zip file. If you don’t have USB driver installed, install MTK USB driver, Step 2, Now open your SP Flash tool, then all you have to do is select the file, then click the download button, Step 3, now…