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I know but according this guide you need to disable Peripheral Device Setting (OPROM Setting) when you do it, "Load legacy Option Rom" become disabled. Anyway on BIOS 1.2.2 with OPROM Setting disabled in my situation works much better than BIOS 1.2.9 with OPROM Setting enabled because sometime...

I did a few test and noticed that on legacy rom enable (Pheriperial Device Setting (OPROM Setting enable)), it boot but I don't like it cause sometime doesn't boot property I must stay on BIOS 1.2.2. On those testing with/out -cdfon same results.

Thanks you're right, CodecCommander upgrade override any configuration made to Info.plist so I did what you suggested me and audio jack is working fine. beside that, my system has UHD display I got a doubt with -cdfon bootflag, on BIOS v1.2.2 I don't have to use -cdfon and boot without problem...

I'm a noob in this testing but adding ALC256 profile to CodecCommander.kext/Contents/Info.plist and using setting for ALC283 then install to /L/E worked for me didn't need SSDT-ALC256.aml I got AppleALC, Lilu and WhateverGreen installed to /L/E in order to work. It's not recommend to edit any...