Several responses to that.
1) Bo cultivated this arm's-length posture toward the fans from the day he arrived here, before anyone "hated on him." This isn't new, and it isn't Bo reacting to the fans' behavior. This is a Bo personality trait.
2) Bo receives a lot of ridiculous, over-the-top criticism. But that molehill pales compared to the mountain of justifiable criticism he receives; supportable, rational, reasonable criticism of his teams and his coaching. If he's going to choose to focus on the unreasonable, that's on him. And it clearly seems like that's what he's doing. His apologies and rare, trite approbation of "the fans" seem disingenuous when factored in to the constant stream of dislike he puts out toward the fans in general.
3) The fastest way for Bo to stop fans "hating on him," and by that I presume you mean the irrational hate, is to field a team that plays fundamentally sound football, conduct press conferences that aren't openly antagonistic toward the press (even though a fair portion of the press are asshats and dump fuel on Bo's fire at every opportunity), frequently speak about the positives about coaching at Nebraska, and in general sell the fans on the fact that he wants to be here.
Bo's wounds are largely self-inflicted. Yes, he is the recipient of unreasonable criticism. But it's his job as a major-college D1A head coach to ignore that criticism and do his job. All too often it seems like that criticism is at the forefront of his attitude and behavior, and we can't have that.