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    Black screen after upgrade Clover 4920 to 5141

    I have tried both Big Sur installer and Re-install Big Sur from Recovery option and the result is the same as the image above. My Ethernet and Wifi / Bluetooth are working fine and the download process seems to be completed. Look at the install log, it has some errors like that: IFJS: Package...
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    Black screen after upgrade Clover 4920 to 5141

    Thanks for your suggestions Edward, I have tried but nothing changes. So after a couple of hours, I tried to make a new Opencore 0.7.4 EFI from Dortania guidelines. And after I changed to Opencore 0.7.4 EFI, I still not being able to boot into Mojave. It just runs some command line that ends up...
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    Black screen after upgrade Clover 4920 to 5141

    Hi all, I have tried to upgrade my EFI of Clover 4920 to 5141 to prepare for an upgrade from Mojave to Big Sur. But after I replace the new EFI (Clover 5141) the current system running Mojave is stuck at black screen after boot without any errors. Even I have tried to replace the EFI with a...