Cisco Nexus 7010 chasis

i am trying to reset password for the Cisco Nexus 7010 chasis need ur help
i tried these commands and it didn't work

Step 1 Establish a terminal session on the console port of the active supervisor module.


Note If you are using a non-U.S. keymap, the key sequence that you need to press to generate the break sequence may not work. In this case, we recommend that you set your terminal to a U.S. keymap. You can enter Ctrl-C instead of Ctrl-] (right square bracket) due to keyboard mapping.
Step 2 If you use SSH or a terminal emulator to access the console port or you are recovering the password on a Cisco Nexus 5000 Series switch running Cisco NX-OS Release 4.0(0)N1(2a) or earlier releases, go to Step 6.

Step 3 If you use Telnet to access the console port, press Ctrl-] (right square bracket) to verify that it does not conflict with the Telnet escape sequence.

 switch login: Ctrl-]
If the Cisco NX-OS login prompt remains and the Telnet prompt does not appear, go to Step 6.

Step 4 If the Telnet prompt appears, change the Telnet escape sequence to a character sequence other than Ctrl-] (right square bracket). The following example shows how to set the Ctrl-\ as the escape key sequence in Microsoft Telnet:

 telnet> set escape ^\
 Escape Character is 'CTRL+\'
Step 5 Press Enter one or more times to return to the Cisco NX-OS login prompt.

 telnet> <Enter>
 switch login:
Step 6 Power cycle the device.

Step 7 Press Ctrl-] (right square bracket) from the console port session when the device begins the Cisco NX-OS software boot sequence to enter the switch(boot)# prompt mode. You need to press Ctrl-] (right square bracket) when you see that the system image is getting loaded.


Note For Cisco Nexus 5000 Series switches that run Cisco NX-OS 4.0(0)N1(2a) or earlier releases, use Ctrl-B (Ctrl+Shift+B) instead of the Ctrl-] (right square bracket).
 ...
 Executing Mod 1 2 SEEPROM Test....done
    Mod 1 2 Post Completed Successfully
    Mod 3 Post Completed Successfully
 POST is completed
 Checking all filesystems....r. done.
 Ctrl-]
 switch(boot)#
Step 8 Reset the network administrator password.

 switch(boot)# configure terminal
 switch(boot-config)# admin-password <new password>
 WARNING! Remote Authentication for login through console has been
 disabled
 switch(boot-config)# exit
 switch(boot)#
Step 9 Display the bootflash: contents to locate the Cisco NX-OS software image file.

 switch(boot)# dir bootflash:
Step 10 Load the Cisco NX-OS system software image.

In the following example, the system image filename is nx-os.bin:

 switch(boot) # load bootflash:nx-os.bin
Step 11 Log in to the device using the new administrator password.