問題描述：
當應用程式crash 或 hang 住時，如何reset 系統 ?
解說：
Use the power key and volume key to force the device to restart:
Step 1:
Press the power key and volume key together. Hold for about 12 seconds.
同時按住『電源按鍵』與『音量加減按鍵』約12秒
Step 2: When you see the LCD screen go to black, release the keys immediately. The device will reboot.
當您看到LCD 畫面進入黑色時，放開所有按鍵。系統會自動重新開機
If you see an unusual menu (shown below) when you try to reset, you can use the volume up key to move the cursor to Normal Boot and then press the volume down key to confirm.
當出現不正常menu 畫面時，按音量加按鍵選到Normal boot , 按音量減按鍵確認。
