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Antonio Brown is officially back in the Sunshine State ... the former NFL star was captured walking off a jet in Miami as he prepares to go on trial for attempted murder. AB was seen arriving back in Florida hours after his plane touched down ... a few hours after he left the Essex County Jail in New Jersey, days after he told a judge he wouldn't fight extradition back to Florida. Brown was initially taken into custody last week in Dubai. In the video, captured by Andy Slater, 37-year-old Brown is wearing a blue jacket while being escorted down the jet bridge stairs to the tarmac. Not long after, AB was booked into the Turner Guilford Knight Correctional Center, a Miami-Dade Corrections facility ... where he posed for a new mugshot. Brown's attorney -- Mark Eiglarsh -- told TMZ Sports Monday that he had already filed a not guilty plea on his client's behalf. We're told Brown will likely go before a Florida judge for the first time on Wednesday ... where bond could be set. 5/16/25 Check the Star Of course, Brown's charge stems from an Adin Ross boxing event in May, where former friend Zul-Qarnain Kwame Nantambu alleged Brown snapped at him during the influencer boxing event, before ultimately trying to shoot him with a handgun. Antonio is adamant he was simply trying to protect himself, which his attorney echoed.