修改android系统属性。 转自 https://bbs.pediy.com/thread-215311.htm
adb push mprop /data/local/tmp/
adb shell# in adb shell
chmod +x /data/local/tmp/mprop
su
# inject & hack
/data/local/tmp/mprop
# verbose mode ==> dump memory
# /data/local/tmp/mprop -v > myprop.txt
# restore
# /data/local/tmp/mprop -r
# change ro.xx property
setprop ro.debuggable 1