Nexus 5k won't admin password wont reset

I have a Cisco Nexus 5000 that is a bit older however through the last couple years and changing of employees we managed to forget the Local login in password to the switch. I have gone through the process of trying to get the password reset using the cisco guide below. However I can not get it to work after step seven (I am using an older OS so I am doing the control shift B) However the switch still reboots as normal. Any tips on what I can do?

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/password_recovery/b_nx_os_pwr/nx_os_pw.html