Well following this guide...
...I get the following error when trying to use odin.
<OSM> Enter CS for MD5.. <OSM> Check MD5.. Do not unplug the cable.. <OSM> Please wait.. <OSM> root66_ATT_I747UCDLK3.tar.md5 is valid. <OSM> Checking MD5 finished Sucessfully.. <OSM> Leave CS.. <ID:0/005> Odin v.3 engine (ID:5).. <ID:0/005> File analysis.. <ID:0/005> SetupConnection.. <ID:0/005> Initialzation.. <ID:0/005> Get PIT for mapping.. <ID:0/005> Firmware update start.. <ID:0/005> aboot.mbn <ID:0/005> NAND Write Start!! <ID:0/005> FAIL! (Auth) <OSM> All threads completed. (succeed 0 / failed 1)
FWIW I plan to root/unlock this thing so I can use my tmobile straight talk sim in it. Just can't get it to cooperate for some reason.