If you’re Sidekick gets zebra/bar-code stripe:

  1. Soft reset your device by pressing the following keys: @+1+0.
  2. As your device reboots, press and hold the green POWER button and the ‘P’ key. Release these buttons after the device shuts down.
  3. Finally, insert the AC power adaptor to restart your device.

The timing is a bit tricky since you can’t see anything. I finally got it to work when I held down the power button and the p key after the screen flashes, a little bit after letting go of the soft reset combo.