I just had this issue while I was trying to use firewater S-off. I kept getting a device offline error. It turned out my adb drivers were old so I just downloaded the latest SDK and installed the latest drivers. Not sure if that's your issue, but updating your drivers is a start.
The Android OS showsgreat potential in many areas. One of most interesting things that … more
20 Aug 2014
By Tomek Kondrat
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?