Question [Q] Need baseband for AT&T e980

I'm trying to flash the baseband for the LG Optimus G Pro AT&T version using this file (unfortunately, I'm a new user so I can't post the URL here).

Unfortunately, it errors out during flash:

set_perm: some changes failed
E: Error in /data2/media/clockworkkmod/backup/E980_Baseband.zip
(Status 7)
Installation aborted.

What permission does it need? Does anyone have working baseband for AT&T?

Thanks