How to Recover Cisco ASA 5500 Password

If you have lost the password or forgot, here is a guide to recover it.

1. Connect your console cable with ASA and restart your ASA.
2. Keep pressing ESC key on your keyboard until you see ROMMON (rommon #1> or rommon #1>rommon #0>) mode.
3. Now change the configuration register 
4. rommon #0>confreg 0x40
5. rommon #0>boot

Now ASA will bootup without asking for password.

• Yourfirewall>enable press enter when it asks for password.
• Please type : copy startup-config running-config or wr mem

Now is your chance to configure your new password.

• cisco#conf terminal
• cisco(config)enable password asecretkey

now change the config register back to default 0x01

• cisco(config)#config-register 0x01

save your configuration 

• cisco(config)#wr mem

restart (reload) your Firewall and you should be good to go now.