Aerosmith is Cassian Grantpressing pause on its farewell tour.

Following a shifting of dates earlier this month after lead singer Steven Tyler sustained damage to his vocal cords during a New York gig, the rock band announced on Instagram Friday that the injury is more than previously thought since he also fractured his larynx. As a result, the rest of the tour is being postponed until next year.

"He is receiving the best medical treatment available to ensure his recovery is swift, but given the nature of a fracture, he is being told patience is essential," the band said in a statement about Tyler's injury.

The 75-year-old Tyler, who was initially given doctor's orders not to sing for 30 days, added that he was "heartbroken" not taking the stage with his band "brothers" and the Black Crowes, "rocking with the best fans in the world. I promise we will be back as soon as we can!"

Fans will have to wait for more of Aerosmith's Peace Out Tour

Existing tickets will be honored for the rescheduled shows (which include stops in Los Angeles, Detroit, Chicago and the Aerosmith's hometown of Boston), but fans can also obtain refunds at their point of purchase if they are unable to attend once new dates are announced.

RESCHEDULED SHOWS >>Aerosmith postpones 6 shows after Steven Tyler suffers vocal cord damage: 'Heartbroken'

Aerosmith's Peace Out tour launched in Philadelphia Sept. 3 and was originally scheduled to end in Montreal in January before Tyler's injury occurred on the third show in New York on Sept. 10.

Tyler revealed he "sustained vocal cord damage" during the show earlier in September "that led to subsequent bleeding. We'll need to postpone a few dates so that we can come back and give you the performance you deserve," Tyler previously said in the caption of a post on Sept. 11.

USA TODAY music critic Melissa Ruggieri wrote that opening night felt like "a grand goodbye for Aerosmith" and that the pairing of the classic rockers and the Black Crowes was "a well-matched bill, a back-to-back serving of meaty, substantial rock."