Originally Posted by KTM250
I would be very careful saying this. The update has really trashed the picture on my D8000. The blacks are no longer black they are gray. Dark content never gets black. It looks like what they did was to make the tv stay in the popped state. Dark content has the light haze look to it now. I hope recalibrating will help. If not I will contacting Samsung and found out how to roll this back one Rev.
Try again after calibration (I'm assuming you have a meter to confirm?). The update in no way trashes the black levels. 0% pre/post black level stability has been confirmed on the D8000 and D7000 by me(51D8000) and Jason Widdon@HDJ owners thread (64D7000), not sure if Larry has measured it yet but his qualitative assessment was positive.
You will not be able to rollback the update without replacing your logic board.