Originally Posted by asilviug
Yes, a late 2013 model. He said that the database could become available again in the future...
If I want to contact AT&T, what would be the best way? Phone/email? I'm not an US citizen nor living in US.
I'm not an AT&T customer, so I can't advise on contact info, but I can tell you that you will be wasting your time if you even try. The chance that they will give you the code is exactly 0% no matter how nicely you ask them.
You might consider selling your AT&T XT1058 and buying one that can be unlocked, such as the XT1053, or the XT1058 Roger's variant if unlocking the BL is that important to you.