Cisco 857 - Username Cisco expired

Hello
I have logged in via Telnet on a brand new 857w router with the cisco
username (password: cisco) but I havent created another user account.

The cisco username is no longer valid as it has expired after one use.
I need to reset my router back to default, so I can configure using
SDM

How do I do this??

 

Console into the router, then power cycle it. As its rebooting hit the
"break | pause" button on your keyvboard, and you get to the
rommon1>
prompt.Then type
rommon1>confreg 2142
rommon2>reset
The router comes back on as if it were new---answer no to the first
question, and sometimes it asks a second question (do you want to
terminate autoinstall, or something...)---answer yes to the second
question if it asks. Then hit enter and you get
router>
in a few seconds. Then
router>en
router#copy start run
create a new account:
router#conf t
router(config)#username bob priv 15 password bob
set register back
router(config)#confreg 0x2102
router(config)#exit
router#wr
router#reboot

and that should let you login with bob/bob

Flamer.