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It's with ATT
Version-3.1.3 (7E1
Model starts with MC
Modem Firmware-05.12.01

I accidentally updated my phone to the 3.1.3, I had not jail broken it before and I am wondering if it is possible. I have seen in a lot of places saying it's not available yet but I am wondering if it is still possible to downgrade to 3.1.2? And I have heard that the software is out there? Any Help?