If you are using the proper firmware and running the app correctly, and you are still stuck, proceed with the following fixes: Fix 1) With redsn0w running, unplug your iPhone’s USB connection and plug it back in Fix 2) Unplug the USB cable from the computer and plug it into a different USB port that is closer to your computer (not a USB hub, keyboard, etc) Fix 3) Reboot your iPhone by holding down the Home and Power buttons for 30 second Nếu 3 cách trên ko đc thì JB = sn0wbreezedl-master (hay Sn0wbreeze v2.9.14) đi 6.1.3 redsnow bó tay rồi