If I read the file correctly the Config.plist does include the file "FixShutdown-USB-SSDT.aml" and the "change Method(GPRW,2,N) to XPRW" patch in the ACPI section, is this not done properly? Or is the patch itself wrong?
The latest EFI was actually shared through google drive: https://drive.google.com/drive/folders/1rHt4Md8xn3I5kIONioLUtWvkVriHufW1?usp=sharing by another user with a similar Laptop. I believe this was not based on the shutdown patch posted above. Unfortunately, I do not remember the name and the old thread is deleted. It did not fix the issue though.
I remember that @Jake Lo asked for the ioReg information to dig a little deeper. Since i have not received any reply from him I am not sure if he was able to look into it, yet. However that was discussed in between him and @Hecatomb originally. Since i do not really know how to make this patch myself Hecatomb offered to post the question here. We both wanted to better understand how this is done correctly. The above mentioned Dortania guide is a good start, but does not really help to find the real location in the DSDT file.
Any support to get me and Hecatomb there would be appreciated.