So I tried to install the 4.2 update, and after the first restart, it said it couldn't reconnect to the device and had to abort the operation. Now my BB just has a white screen. In the center is a window with shapes in it with a "no" sign over it. Under this symbol is the number 507. The device manager doesn't seem to detect my BB being connected anymore, so I can't try to restart the whole operation. Have I just bricked my phone?!
EDIT: Ok, crisis averted, I think. Apparently my laptop decided that it would be a good time to turn off the USB port to save power right in the middle of the update process. Changing the option to turn off USB ports let the computer see my BB again, so now I'm going through the process all over. Good thing I backed up all my data...