How to get the unlock code prompt on AT&T Nighthawk MR1100

You need to power on the device with T-Mobile SIM in order for you to enter the unlcok code.

Thanks

Thank you very much for your quick response.  I went ahead and used that link to have OTR send me an unlock code.  The way you describe what happened when you tried the instructions to get the unlock code prompt, I am wondering about something, and it has to do with which SIM card you had in your Nighthawk when you tried it.  See, I had gotten the new SIM card and was going to try and get it activated, and that's when I got the prompt for the unlock code.  You have to keep in mind that the old SIM card is meant to work on the AT&T network and with an AT&T device.  The new SIM card switches you over to the T-Mobile network (much better anyway in my opinion) and so the device is saying "hey that ain't right" and proceeds to want to unlock the device in order for a foreign SIM to work.  That's the only thing I can think of that could be causing you the headache.

I upgraded as a legacy customer to the new blast package in early April and received my SIM card last week.  The card arrived in an empty envelope; no order sheet, no instructions, nothing.  I finally got around to swapping the SIM cards out only to discover that it wasn't working.  After LONG hours of researching on the internet, but the OTR Moible webpage has NO information; I discovered through chat spots like this that I needed a unlock code, which they were supposed to send me through email.  No email had arrived. 

So I spent a long 2 hours waiting online for the "live chat" option.  The representative told me that the company they hired to unlock the Nighthawk devices (which I purchased from OTR) was on lockdown in NYC and was thousands of units behind; therefore they had no way of knowing how long it would be before they received my unlock code.  They also had no way of knowing how long my ATT Sim card would continue to function (How do they not know this??)  They referred me to DC Unlocker or CellCorner; they would not reimburse the cost of the unlocking.

I went with their company because I had heard their CS was great; not so much.  All of this information could easily be sent to customer that have received SIM Card but not Unlock code.  All could be published on their website.  They do not want to do this because they would not be able to charge you the auto monthly fee; thus they do not publish.

So there it is - unlock it yourself or pay and wait.

That is sometimes a workable option IF you have an "ATT Branded" unit.  As far as I know, for anything else, say a Nighthawk that's locked to AT&T but purchased from OTR Mobile, you're screwed.  AT&T won't help.

Guys, you can keep posting that link to AT&T ad nauseum.  IT'S NEVER GOING TO WORK FOR NIGHTHAWKS PURCHASED FROM OTR MOBILE. 

According to AT&T, the numbers associated with those devices belonged to TELEPHONES and should never have been associated with hotspots.  AT&T WILL NOT UNLOCK THEM.

OTR Mobile WILL NOT UNLOCK THEM.

Netgear WILL NOT UNLOCK THEM.

As far as I know, your choices are limited to dc-unlocker and some other company that purports to provide unlock codes for these devices.

I'm not sure what dc-unlocker is, but I found posts elsewhere that it's a group in Lithuania.  To use them you have to go through some process of getting "credits", possibly some cyber currency, and whatever you give them is GONE whether they provide you with a successful unlock or not.  There are LOTS of posts in various places from angry, frustrated people that WEREN'T successful getting unlocked by dc-unlocker.  Others HAVE been successful.  I haven't tried to unlock mine yet so I don't know if dc-unlocker is a total scam, a reliable company, or something in between.