Support Factory Reset says it cannot access "/system/csc/ATT/system/" HELP!

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http://androidforums.com – Last night at midnigh my phone shut off by itself and rebooted, when it came back on, the Samsung Galaxy S2 logo displayed then it went to the ATT Rethink Possible splash screen and just stayed there and refreshed itself every 30 seconds. I have an unrooted phone with no updates installed. I read that ATT did an update last night at midnight so I called them and they transferred me to Samsung Tech Support. They said the update ATT did has something to do with it because when i try to do a factory reset, it says it cannot access "/system/csc/ATT/system/" so now what do i do? (General)