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Today I am success install Catalina 10.15.4 beta 3 for HP Z440(E5-1620 v3, Nvidia GTX 780 Ti) with fully working fire.

It not work in my E5-1660 v4. My EFI work perfect on E5 V4.

Sorry I miss for remove kext patchers of USB 3.0 now I fix it please use below EFI (or copy and replace only config.plist)

Yes i make this ssdt pm and dsdt for apple HDA audio

Yes you are right. don't need any kernel patches. you can use below option for power manager! 1. not use acpi ssdt pm + faceCPUID(0x0306F2 on config.list) + nullcpupowermanagement.kext All work with sleep but CPU Freq max is 3200Hz 2. use acpi ssdt pm + do not use fafceCPUID +...

i dont know but my device is below.

first time you cannot erase one partition. backup your data and erase whole disk by disk utility and repartiotion.

sory i don't know but it work fire for my previous of quadro M4000. now i uppload worked EFI for AMD graphcis boot with some change boot parameter for nividia. if you can install success contact to me. i can folow you for nividia install drive.

mount efi driver and delete EFI folder in this driver and replace with attack efi folder below. i hope it can work for you.

Please share me. Your computer's graphics infomation. If nividia i can send efi work for install but graphics cannot work.

If 10.15.2 work with your computer. You can update to 10.15.3 without any change

Yes is normal as 3200mhz

Success HP Z440 E5-1660 v4 and Sappear nitro+ RX 5700 XT OC with full working. :):):)

you can reinstall macos and after install first times login donot use apple ID (create local user only) and boot to desktop. now restart and enter setting and login your apple ID.

Today I have success to install macOS Catalina 10.15.3 on my workstations HP Z440 E5-1660v4, Sapphear Nitro+ RX 5700 XT. All of funtion work fire with me.