MP 1,1-5,1 Mac Pro - Multiple Secure Boot Certificates Causing Corrupting/Bricking

[Arthur Getting]

I installed Windows 10 on my Mac Pro 5.1 using a UBS stick and ended up signing multiple Secure Boot certificates to it. I know I should have used a Windows 10 DVD instead. I am worried about corruption on my Mac and bricking it. Does anyone know how to fix this? I bought a new graphics card and want to update it to Mojave but am don't want to do more damage. Does anyone have any advice or can push me in the right direction?

 

[KeesMacPro]

Hi Arthur ,welcome to this Forum.
It's recommended to make a signature ,or at least add a description of all the hardware (including BootRom version and SMC number) and software installed on your MP .
This gives the reader an overview of the situation , so people can help you easier, faster and more adequate .

 

[Macschrauber]

Flash back your rom dump and use either Bios mode from dvd or opencore to protect the firmware.

Everyone should make a rom dump to backup the firmware.

Especially when playing the windows uefi gamble.