I can't remember how I used OCL on my Mac Pro. I think I downloaded OCL 0.4.6 onto my Mojave SSD and put Big Sur on another SSD in the Mac Pro. If I remember correctly, the Big Sur Update went into my Applications folder on the Mac Pro. Not sure about that. I'll try it on the Mac Pro and see what happens.Are you able to copy the patcher from the MacPro to a flash drive and use that to install on the MacBook?