Support Flashed canadian firmware onto us gs3...how to flash back?

view story

http://androidforums.com – So I accidentally flashed my at&t galaxy s3 to canadian firmware...I wasn't paying attention, and I followed these directions one night... How to upgrade the Galaxy S3 I747M to Android 4.0.4 ICS build VLALH1 And when I realized it, I tried to flash back to the stock US AT&T firmware, but haven't been successful. I've followed these directions to try to flash back to the stock firmware: How to Install/Return Back Samsung Galaxy S3 AT&T SGH-I747 to Original Factory Stock Firmware | Android Firmware Updates But the phone gives me this error: "Unfortunately, the process (General)