Lose Rockwell Micro Logix1000 protected password

Dear any Friends,
I have a Rockwell MicroLogix 1000. It is operating now.However I want to modify its program but I lose protected password.Therefore I didn't download program again from PLC.
Do any one know what method to discover protected password for Rockwell MicroLogix1000 ?
Please to help me for solving this trouble.
Thanks a lot.

Sincerely

Contact Rockwell. Perhaps they will walk you through it. Talking about cracking passwords is against the terms of service of the website, as it's illegal.

Trying again?

Apparently he didn't understand the message: http://forums.mrplc.com/index.php?showtopic=11546

Let's forgive me.I disturb any body.
Iam sorry.

Regards

try ab un lock (without spaces)... In SLC500 i know it works...