https://www.google.com/android/uncertified
# disable root at first.
# backup
adb shell sqlite3 /data/data/com.google.android.gsf/databases/gservices.db \"select * from main where name='android_id'\"
# update
adb shell sqlite3 /data/data/com.google.android.gsf/databases/gservices.db \"update main set value='<my_certified_android_id>' where name='android_id'\"
# check
adb shell sqlite3 /data/data/com.google.android.gsf/databases/gservices.db \"select * from main where name='android_id'\"