MSMA is the only way to go its pretty easy to get at an ag chemical place. Mix it bout twice the recomended dose and burn the crap out of your bermuda. Let it gome back to full green and spray it again with the same dose. Your gonna have a brown lawn for a couple weeks but after that you can fertalize with 0-0-34 after that and your grass will take off. Ive been doing it like this for years. some years I dont have to spray at all. Never had much luck seeding tho.

