Sequoia Update Hangs & Boot Loops on Phase 2

Hey hope all are well!

I've got my EFI working fine on Ventura and Sonoma, but it will not boot the installer (phase 2) for the update to Sequoia.

Here's a video

and here's some pictures

it's kind of tough to get the exact line that caused the reboot. it often used to be the last one before it crashed, but in this case I can see it shuts down by command for some reason

https://preview.redd.it/rb1rjusfcyse1.jpg?width=1080&format=pjpg&auto=webp&s=cdc1d4dd1e4acd2e5e1d496485a3be9216661393

https://preview.redd.it/7sfnm7hgcyse1.jpg?width=1080&format=pjpg&auto=webp&s=31ee0f20df6de9e9fd5457bfc6ed6f3a39ce0537

Also, I tried SecureBootModel Disabled and AdviseFeatures, as well as disabling Wi-Fi kexts (I don't even have any), even CPUFriend,

I tried changing to iMac19,2 as well as RestrictEvents + revpatch=sbvmm

14700k, Z790 Aero G.

any ideas?

Thanks in advance!