... after 10seconds, the safe is unlocked.Example: if the Master Password is 123456781234, in locking state, press 123456781234, → press #, ... during the display PASS1~9,display CODE, input your new Master Password (it must to be 12digitals), display GOOD, modify ... display PASS1~9,display CODE, →input new Master Password 112233445566, display GOOD, the Master Password has been changed to 112233445566.5 ...