This is for jsl2000 because of his specific question. In general, as the developers say: refrain from installing Ventura unless you are a developer.
Sorry for the delay, hope it is still relevant.
The entire os.dmg is a bit big (4.2 GB), instead here is what I did to get hold of it. Maybe too detailed for you but anyway, also as reminder for myself.
- In
https://developer.apple.com, Account -> login.
- Click Downloads in left bar.
- Scroll down to macOS 13 beta 6 and click Mac computers with Apple silicon. Download size some 12 GB.
Then as in the 1st post of this thread:
- Rename the downloaded file from .ipsw to .zip and expand it.
- In the folder, rename the file of size 4.xx GB to os.dmg, and you can delete all other files.
- Put the os.dmg in the ventura target disk's Preboot, similar to the Terminal output of my previous post.
This worked for me, but as I said, of very limited use so far, it is just to verify that I've understood the non-AVX cure.
As you are a hackintosher, I assume you know how to proceed. Good luck!