I have already had two 9780's with exactly the same problem. On three occasions, I ran the switch device wizard on 6.0.1 and, within four hours, while reinstalling applications that were mysteriously uninstalled from my 9700, through Blackberry App World, or upgrading existing applications, the device flashed white and then rebooted. At the black screen, the bar goes about 30% across, then jumps to about the 70% mark and, just as it gets to the end, quickly flashes black and white and then reboots. I let this run once, and it rebooted 27 times before I finally removed the battery. On one occasion, it lasted for three days before the endless reboot. I have spoke to BB Tech support, have an open case, and the first phone call lasted over ten hours. There have been subsequent calls of 90 to 180 minutes. I thought that I had this figured out and that Quick-Pull was causing the problem. (I had had minor problems with Quick-Pull before, and it did not work on my 8900.) But I deleted both Quick-Pull and Restart Me on my 9700 before I ran the switch device wizard the fourth time, and, within two hours, the device threw itself into endless reboot again. I am back using my 9700. HELP! I reloaded the software each time from the DOS prompt on Win 7 Home Premium with the /resettofactory or /nojvm switch of loader.exe (starting with the battery removed so it was not in endless reboot, until the PIN showed up) before running the switch device wizard.