Hey Admin,
thanks for hearing after me! I finally got it: unlike the transition from Mojave to Catalina I had to swap the unflashed 580 GPU to my old one to get the boot screen. After that, it was so easy. Before, it wrecked my nerves! I am on Monterey now and maybe going further, but it seems...
Hi,
I landed here, because I became in trouble updating my 5.1 from Catalina to Big Sur.
I'm a cMP user for many years and use it mainly for Logic Pro.
Greetings from Frankfurt / Germany
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