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AT&T S3: Can't flash recovery or downgrade
I just got a Galaxy S3 AT&T and trying to downgrade it to 4.1.1 so I can unlock it. I've done this with quite a few of these and didn't have any problem, but this one...
After flashing recovery (openrecovery-twrp-188.8.131.52), the phone shows "Error" .. "No command" when I went to recovery (and standard recovery came up)
Then when I tried to flash stock 4.1.1 (I747UCDLK3), odin keeps saying Fail! (Auth)
The phone currently has 4.3 (I747UCUEMJB), not rooted.
I looked up, but still have no idea what I've been missing, so please help.