Why does HTC Incredible not update? My HTC Incredible (Verizon) has tried to update to either Ice Cream Sandwich (android 4.0.x) or just build # 4.x (I'm not sure which) for the past two weeks or so.  Either way, it has not been succesful.

Sometimes I'll get a notification telling me that the update has been downloaded, and asks me whether I wan't to reboot to install.  I tried that a bunch of times, but neither time did it even shut down after the ten second delay/grace period.  Once I tried going to Settings > About Phone > System updates, and downloaded the update and tried to install, but the same thing happened: ten second countdown, then nothing.

Now, the notification never pops up, and Settings > About Phone > System updates indicates that no new updates are out.  What's happening?

Thanks!
If you have installed a custom recovery (Clockwork or other) you won't be able to install the OTA update. You have to be stock ROM, with stock recovery in order to install OTA updates.

I am assuming that you have rooted and installed a custom recovery since you listed rom-manager as a tag. 

If you want the update you will first have to get back to stock recovery and rom. Your best bet at this point is to install a custom ROM that was built from the latest update. That should stop Verizon pushing the update to your device.