I know my first droid It would not root or do an OTA update. When it would install and reboot to finish the installation it would just stay on the M logo screen and I would have to pull the battery to restart the phone but would revert to the old program. even factory reset would hang on the M screen. I had to get a new phone. Like many has said Every droid is different and reacts to programs differently. I am running the GPA12 rom with no problems.