Well, I took another shot at reloading the OS, and was successful, after a fashion. If I now install a very weak battery, and plug the phone into my computer, I *sometimes* get the hourglass instead of the flashing red LED. Eventually, I will get the ATT logo, followed by a successful security test, followed by the setup menu. However, if I select and click on any of the menu items, I'm back to the flashing red LED again. The keyboard's also dead when the setup menu is up. Anybody have any ideas for this new set of symptoms?