I tried this step-by-step, and the Odin - kernel-GB-3a.tar.md5 failed
The phone acted funny, and gave a phone-!-computer symbol...since I didn't know what to do, I used Odin - and cwm-5.0.2.7-epic4g.tar.md5. This was successful, but I believe the phone reverted back to Gingerbread.EL30.
The...