搬运一个XDA上 HDX8.9的救砖贴

THIS IS SPECIFICALLY FOR THOSE THAT REMOVED (PERSONALLY OR VIA SCRIPT) SOMETHING FROM THE SYSTEM PARTITION OR MESSED WITH THE BUILD.PROP.
那些改build改错的
能帮你们的只有这些了
http://forum.xda-developers.com/showthread.php?t=2588608