Question about generating SSDT for Sandy Bridge + Catalina

Mar 28, 2011
Gigabyte Z68MX-UD2H-Clover
RX 580
Hi there! I've recently upgraded my system to Catalina and I have arrived to a very stable result. In my past systems I never fiddled with SSDTs myself, although I think I did choose the Sandy Bridge i7 SSDT in Multibeast for my High Sierra install.
This time, I came across the concept in the forums, and decided to give it a try just to get everything covered.
I set out to follow this guide:
My SMBIOS is iMac 14,2, which I understand is the recommended one for my specs. However, Piker Alpha's ssdtPRGen script returns the following meesage as soon as I fire it up:

gDataPath: /Users/leo/Library/ssdtPRGen/Data
System information: Mac OS X 10.15.2 (19C57)
Brandstring 'Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz'

Scope (_PR_) {220 bytes} with ACPI Processor declarations found in the DSDT (ACPI 1.0 compliant)
Generating ssdt.dsl for a 'iMac14,2' with board-id [Mac-27ADBB7B4CEE8E61]
Sandy Bridge Core i7-2600K processor [0x206A7] setup [0x0703]
With a maximum TDP of 95 Watt, as specified by Intel
Number logical CPU's: 8 (Core Frequency: 3400 MHz)
Number of Turbo States: 4 (3500-3800 MHz)
Number of P-States: 23 (1600-3800 MHz)
Injected C-States for CPU0 (C1,C3,C6,C7)
Warning: 'cpu-type' may be set improperly (0x0703 instead of 0x0603)

Error: board-id [Mac-27ADBB7B4CEE8E61] not supported by Sandy Bridge – check SMBIOS data / use the -c option
How should I continue? I see the guide was written in 2015, so I guess the recommended SMBIOS back then was compatible with the latest OSX at the time. I am sorry if I am asking something silly, I tried googling but couldn't find specific information for this outdated combination of Sandy Bridge + Catalina.

Thank you very much for your help,