I didn't. I just typed in random stuff and then I got through.
I could crack the code by hacking the keypad and running every possible combination by a microcontroller. Or I could build a custom uSD card reader and crack the code much faster. I wanted to avoid those two approaches, so luckily the password was only "abc".
When one person suffers from a delusion it is called insanity. When many people suffer from a delusion it is called religion.