[Atrix 4G Q&A, Help & Troubleshooting] stinkeye22:
May or not be the same type deal. Got an atrix as a loner from Best Buy and when we couldn't get the unlock code I tried all of the above also... To the point of softbricking the thing and reflashing stock before I got in touch with ATT. Maybe it will help someone.

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You are now chatting with 'Jacques Dray'

Jacques Dray: Hello Mr Albertson and welcome to AT&T live technical chat. I'm sorry that your phone isn't woking for you right now. I can help you get it to work. It is my job to handle your issue to completion. I will also review your account to ensure you are getting the best value for your money. You may also receive a brief survey on the service I have provided for you today.

Jacques Dray: Please allow me a moment to bring up your device and account information so I can help you better.

Jacques Dray: Right now what is your phone saying?

Joel Albertson: I just rebooted it =. It say's SIM network unlock pin with a box

Jacques Dray: Try 1111

Joel Albertson: If it's that easy I will shoot myself hang on

Joel Albertson: network login unnsucsefful

Jacques Dray: Try 0000

Joel Albertson: not that

Jacques Dray: How many times have you tried entering the code?

Joel Albertson: probably dozens but I also have rebooted it and restored it to factory

Jacques Dray: Turn off the device, remove SIM card. read me the SIM card number (it starts with 8901410...)

Joel Albertson: 8901410325*************

Jacques Dray: Thank you. please wait.

Jacques Dray: Gently wipe the SIM card with a clean, dry cloth. Then put into the device and turn on.

Joel Albertson: Its booting

Joel Albertson: asking for code

Jacques Dray: Please wait.

Jacques Dray: Enter this code: 37043287

Jacques Dray: Let me know what happens.

Joel Albertson: k

Jacques Dray: Normally, AT&T device shouldn't be behaving this way.

Joel Albertson: unnsucsessful...

Joel Albertson: It isn't the atrix we used to have... I am assuming best buy has the IMIE number and all registered.

Jacques Dray: There's one more more thing we can put in.

Joel Albertson: a super secret code? lol

Jacques Dray: Use this code: 63683102

Jacques Dray: This, by the way, is the PIN Unlock Key ("PUK") code associated with the SIM card.

Joel Albertson: No...

Jacques Dray: Please wait.

Joel Albertson: I just want my SIII back... This loner thing is killing me.

Jacques Dray: What happened to your SII?

Joel Albertson: USB got bent. Guess I didn't realize that the plug wasn't seated right and it bent it.... I had it exactly 31 days and the return is 30... Using the insurance but because it is so new it could take them 30 days to get it to me because they cant use the ones off of the shelf, insurance, and it's such a new phone they don't have any refurbs so I have to get in line and wait

Jacques Dray: Unfortunately Mr Albertson, our system is currently undergoing nightly maintenance and therefore we cannot check on the line at this time.

Jacques Dray: All the device information has been updated in the billing system

Joel Albertson: It's OK.... I hate to be whoever is working at Best Buy in the morning though....