Need to default 2811 router

Hi all,
Please bear with me.  I noticed several topics along the lines of password recovery for a 2811 router and do not mean to ask a redundant question.  I've followed the .pdf instructions and the router will reboot as normal every time.  I manage to get to the rommon 1> and when I initially entered the confreg command as outlined in the password recovery steps it would not recognize the confreg command.  I ended up typing a ? and all the avaialble commands listed... after the commands listed, the CLI would allow me to type confreg 0x2142 which resulted in a message "need to reload or power cycle" (or something to that effect).  After typing the reset, the 2811 reloads, but reboots to normal condition.  I tried the confreg 0x102 method and got the same result.  After several attempts, it seems like the procedure is not working.  So how can I simply default the router and start from scratch if the recovery procedure fails?
Thank you!

Hello
Can you try the below:-
thanks
please rate all useful information
Shut down the router.
Remove the compact flash that is at the back of the router.
Power on the router.
Once the Rommon1> prompt appears, enter this command:
confreg 0x2142
Insert the compact flash.
Type reset.   /you forget to type reset/
When you are prompted to enter the initial configuration, type No, and press Enter.
At the Router> prompt, type enable.
At the Router# prompt, enter the configure memory command, and press Enter in order to copy the startup configuration to the running configuration.
Use the config t command in order to enter global configuration mode.
Use this command in order to create a new user name and password:
router(config)#username cisco privilege 15 password cisco
Use this command in order to change the boot statement:
config-register 0x2102
Use this command in order to save the configuration:
write memory
Reload the router, and then use the new user name and password to log in to the router.

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