Restore factory settings ASA5505 aka reset

Connect console cable. 
 Switch off the device. 
 While turning it on, press ESC to access ROMMON. 
 Execute command to skip startup-condif 
 confreg 0x41
boot
 
 
 booting 
 
 Once loaded, elevate privileges and return register 
 enable
configure terminal
congigure factory-defaults
 
 
 config-register 0x01
write memory
 
 
 reboot 
 reload
 
 
 Next boot