I had a problem with the DX when it quit charging my stock MOT battery. Verizon replaced the phone with a new one. I immediately tried running Z4Root at was told the program contained a virus. Som assumiong that some how the app had become contaminated in the process of reinstalling all my apps, I downloaded a fresh version 1.2.0 of Z4Root. But I still have the same problem so I am now assuming that the newest version of the MOT system has been rewritten to reject Z4Root. If this is NOT the case, what am I doing wrong? If it is the case how do I go back to an earlier version of the MOT system?? Or was getting the phone replaced just a bad idea that I cannot recover from???