I installed muffin's firmware on my 59D7000 (DS panel), and sucessfully optimized. Logic is now 11-11-04, and this firmware actually works.
For a particularly nasty pop fest, I checked a concert bluray in 1080i (Return To Forever, Montreux - absolutely stunning quality audio and video). This is a perfect FBr test disc. Only one visible brightness fluctuation remained, guitar solo with about half of the frame very bright and half jet black. Instead of a single large pop, I get 2 smaller steps up (mini pops) followed by a slide up a touch more. So, I'll give it a 95% fix, and that's good enough!
Thanks to zoyd, larry, and everyone else who played guinea pig while I sat back and waited until I thought it was safe. Sissy.