Help - upgraded macOS on top of dosdude mojave patch - how can I recover? - late 2008 Macbook Pro

I used dosdude's mojave patcher on my late 2008 macbook pro (5, 1 iirc). All was good but then in a moment of stupidity I updated to 10.14.2 using system preferences, and it got stuck in a rebooting loop. I was able to break the loop, but now all I get is an EFI shell. Am I screwed? Is there anything I can do to recover?

submitted by /u/sandinmyjoints
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