Now as far as the hearing, I've found it
Though he told us before that he was earless, he’s recovered his hearing
The “found ears” seem to represent fans that will listen to him despite his refusal of commercial output. He may be “mouthless”, but people still listen to him — i.e. he has gained a “hearing” with the public.
To help improve the meaning of these lyrics, visit “Dumb it Down” by Lupe Fiasco (Ft. Gemini) Lyrics and leave a comment on the lyrics box