Can't boot Ventura after latest update - OpenCore patched MacBook 2015

Hi all, hope you can point me in the right direction.

I have a 15" Mid 2015 MacBook Pro with the AMD GPU in it. I used OpenCore patcher to install Ventura on it and was going great, with a few hiccups to deal with, but much cheaper than a new Mac.

Last night I decided to install the latest Ventura update through System Settings and on reboot, the system gets stuck after I put my password in the first time to unlock the drive.

I tried the OSX install option and teh OSX option by holding the power button during boot, but nothing helps. I tried holding shift for safe mode, but that doesn't help either.

I don't have access to another Mac, so I'm hoping there is a way on Linux to make a OpenCore patcher usb stick, as I seem to have written over the drives I used to install this in the first place. I'm guessing this is to do with the Kexts needed not being available in the update?

Any help would be great to get me a working system again!