Currently the Bingner Repo is down, timed out, and giving an error!

Verification Error: The Request Timed Out

It looks like the SAM repo can't handle the amount of requests it has gotten since it was released yesterday!

After entering the URL, the message “Verification Error, The Request Timed Out” appears.

SAM unlock allows iPhone users to unlock even on 4.11.08 and 4.12.01 basebands, which were previously locked.

The best thing to do right now is wait until it is back up, or call AT&T and have them unlock your phone, but that might take longer...