3. Click on the desired firmware version to start the download Downloads Links for Mac Pro (2023) Mac15,12 VERSION RELEASE DATE RELEASE DATE SIZE SIZE STATUS macOS 14.5 (23F79) RELEASE DATE 2024-05-13 SIZE 14.8 GB Signed macOS 14.4.1 (23E224) RELEASE DATE 2024-03-25 SIZE 14.7 GB Signed macOS 14.4 (23E214) RELEASE DATE 2024-03-07 SIZE 14.7 GB Signed macOS 14.3.1 (23D60) RELEASE DATE 2024-02-08 SIZE 14.5 GB Signed macOS 14.3 (23D56) RELEASE DATE 2024-01-22 SIZE 14.5 GB Signed macOS 14.2.1 (23C71) RELEASE DATE 2023-12-19 SIZE 14.5 GB Signed macOS 14.2 (23C64) RELEASE DATE 2023-12-11 SIZE 14.5 GB Signed macOS 14.1.2 (23B92) RELEASE DATE 2023-11-30 SIZE 14 GB Signed macOS 14.1.1 (23B81) RELEASE DATE 2023-11-07 SIZE 14 GB Signed macOS 14.1 (23B74) RELEASE DATE 25-10-2023 SIZE 14 GB Signed macOS 14.0 (23A344) RELEASE DATE 26-09-2023 SIZE 13.9 GB Signed macOS 13.6 (22G120) RELEASE DATE 21-09-2023 SIZE 12.9 GB Signed macOS 13.5.2 (22G91) RELEASE DATE 07-09-2023 SIZE 12.9 GB Signed macOS 13.5.1 (22G90) RELEASE DATE 17-08-2023 SIZE 12.9 GB Signed macOS 13.5 (22G74) RELEASE DATE 24-07-2023 SIZE 12.9 GB Signed macOS 13.4.1 (22F2083) RELEASE DATE 21-06-2023 SIZE 12.5 GB Signed macOS 13.4 (22F2073) RELEASE DATE 05-06-2023 SIZE 12.5 GB Signed