[AT&T] Galaxy Note 2 baseband unknown

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http://forums.androidcentral.com – I was flashing roms using odin, unfortunately I didnt back up my data but thats not the issue. After flashing im unable to use my cell service. When I try to connect to a mobile network it keeps on searching but comes with no results. In the settings menu im getting baseband version unknown. Please help me ive tried to flash modems.bin still with no success. My note 2 is i317m. Thanks (HowTos)