C:\sdk\tools>adb shell
# chmod 0777 /system/app
chmod 0777 /system/app
Unable to chmod /system/app: Read-only file system
# mount - o remount,rw /system/app
mount - o remount,rw /system/app
Usage: mount [-r] [-w] [-o options] [-t type] device directory
# mount - o rw,remount /system/app
mount - o rw,remount /system/app
Usage: mount [-r] [-w] [-o options] [-t type] device directory
# help me..........
