Ragu Posted October 26, 2020 Share Posted October 26, 2020 Hi friends... Good to know Latitude 7480 intel HD 520 version guide is here... My Configuration is i7-6600u. Intel HD 520. 1920x1080 Resolution Non-Touch Display. And one Type-C/Thunderbolt 3 Port. Can Anyone send Updated Latest EFI for Catalina 10.15.7..! Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted October 26, 2020 Moderators Share Posted October 26, 2020 Try this Download EFI here Add attached to /EFI/Clover Thunderbolt may not work 7480_HD520_Cat.zip Link to comment Share on other sites More sharing options...
Ragu Posted October 28, 2020 Author Share Posted October 28, 2020 Hi i have successfully booted catalina from your EFI.. Thank you.. 2 things im trying to fix: built-in 3.5mm headphone jack producing Crackling high freq noise.. brightness control on Fn+F11 & F12 is not working.. F6 is reducing brightness but increase button not assigned... if you have any solution pls guide me... Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted October 28, 2020 Moderators Share Posted October 28, 2020 1) Install CodecCommander to /L/E 2) Replace ssdt with the attached or use fn+S and fn+B SSDT-BRT6.aml.zip Link to comment Share on other sites More sharing options...
Ragu Posted October 29, 2020 Author Share Posted October 29, 2020 Thanks .... Both are working now... F11 F12 working with your SSDT. For audio I used Layout ID 14. working without codeccommander... Layout ID 21 is also working... osxlatitude posts are really helpful for me... Thanks... Link to comment Share on other sites More sharing options...
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