3. Click on the desired firmware version to start the download Downloads Links for Mac Studio M1 Ultra/Max Mac13,1 Mac13,2 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 (22F82) RELEASE DATE 21-06-2023 SIZE 12.7 GB Signed macOS 13.4 (22F66) RELEASE DATE 18-05-2023 SIZE 12.7 GB Signed macOS 13.3.1 (22E261) RELEASE DATE 07-04-2023 SIZE 12.7 GB Signed macOS 13.3 (22E252) RELEASE DATE 27-03-2023 SIZE 12.7 GB Signed macOS 13.2.1 (22D68) RELEASE DATE 13-02-2023 SIZE 12.5 GB Signed macOS 13.2 (22D49) RELEASE DATE 23-01-2023 SIZE 12.5 GB Signed macOS 13.1 (22C65) RELEASE DATE 13-12-2022 SIZE 12.3 GB Signed macOS 13.0.1 (22A400) RELEASE DATE 09-11-2022 SIZE 12.2 GB Signed macOS 13.0 (22A380) RELEASE DATE 24-10-2022 SIZE 12.2 GB Signed macOS 12.6 (21G115) RELEASE DATE 12-09-2022 SIZE 14.1 GB Signed macOS 12.5.1 (21G83) RELEASE DATE 17-08-2022 SIZE 14.1 GB Signed macOS 12.5 (21G72) RELEASE DATE 20-07-2022 SIZE 14.1 GB Signed macOS 12.4 (21F79) RELEASE DATE 16-05-2022 SIZE 13.8 GB Signed macOS 12.3.1 (21E258) RELEASE DATE 31-03-2022 SIZE 13.9 GB Signed macOS 12.3 (21E230) RELEASE DATE 14-03-2022 SIZE 13.9 GB Signed